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  <xs:element name="FairValueMeasurementsDetailsScheduleofmeasuredatfairvalueonarecurringbasisLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_FairValueMeasurementsDetailsScheduleofmeasuredatfairvalueonarecurringbasisLineItems"/>
  <xs:element name="ValuationAllowance" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="bctg_ValuationAllowance"/>
  <xs:element name="TypeOfAgreementDomain" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_TypeOfAgreementDomain"/>
  <xs:element name="DescriptionofOrganizationandBusinessOperationsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="bctg_DescriptionofOrganizationandBusinessOperationsDetailsTable"/>
  <xs:element name="DescriptionofOrganizationandBusinessOperationsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_DescriptionofOrganizationandBusinessOperationsDetailsLineItems"/>
  <xs:element name="OfferingCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="bctg_OfferingCost"/>
  <xs:element name="BusinessCombinationFairMarketValuePercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_BusinessCombinationFairMarketValuePercentage"/>
  <xs:element name="PercentageOfFairMarketValue" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_PercentageOfFairMarketValue"/>
  <xs:element name="NetTangibleAssets" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="bctg_NetTangibleAssets"/>
  <xs:element name="PublicPerSharePrice" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_PublicPerSharePrice"/>
  <xs:element name="PercentageOfOutstandingPublicShares" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_PercentageOfOutstandingPublicShares"/>
  <xs:element name="PricePerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="bctg_PricePerShare"/>
  <xs:element name="TrustAccountPublicShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_TrustAccountPublicShare"/>
  <xs:element name="ClosingProceeds" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="bctg_ClosingProceeds"/>
  <xs:element name="SubscriptionAgreementDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_SubscriptionAgreementDescription"/>
  <xs:element name="WorkingCapitalDeficit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="bctg_WorkingCapitalDeficit"/>
  <xs:element name="LiquidityAndCapitalResourcesDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_LiquidityAndCapitalResourcesDescription"/>
  <xs:element name="PaymentOnNotesPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="bctg_PaymentOnNotesPayable"/>
  <xs:element name="LoanAmountValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="bctg_LoanAmountValue"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="bctg_SummaryofSignificantAccountingPoliciesDetailsTable"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_SummaryofSignificantAccountingPoliciesDetailsLineItems"/>
  <xs:element name="CommonStockSubjectToPossibleRedemptions" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_CommonStockSubjectToPossibleRedemptions"/>
  <xs:element name="CommonStockSubjectToPossibleRedemption" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_CommonStockSubjectToPossibleRedemption"/>
  <xs:element name="InvestmentIncomeOnTrustAccount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="bctg_InvestmentIncomeOnTrustAccount"/>
  <xs:element name="NetOfApplicableIncomeAndFranchiseTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="bctg_NetOfApplicableIncomeAndFranchiseTaxes"/>
  <xs:element name="FranchiseTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="bctg_FranchiseTaxes"/>
  <xs:element name="InitialPublicOfferingDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="bctg_InitialPublicOfferingDetailsTable"/>
  <xs:element name="InitialPublicOfferingDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_InitialPublicOfferingDetailsLineItems"/>
  <xs:element name="InitialPublicOfferingOfPublicShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="bctg_InitialPublicOfferingOfPublicShares"/>
  <xs:element name="DeferredRevenueArrangementType_Domain" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_DeferredRevenueArrangementType_Domain"/>
  <xs:element name="RelatedPartyTransactionsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="bctg_RelatedPartyTransactionsDetailsTable"/>
  <xs:element name="RelatedPartyTransactionsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_RelatedPartyTransactionsDetailsLineItems"/>
  <xs:element name="AggregateSharesOutstanding" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_AggregateSharesOutstanding"/>
  <xs:element name="DescriptionOfInitialStockholders" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_DescriptionOfInitialStockholders"/>
  <xs:element name="AggregatePurchasePrice" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="bctg_AggregatePurchasePrice"/>
  <xs:element name="AggregatePrice" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_AggregatePrice"/>
  <xs:element name="SharesSubjectToForfeiture" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_SharesSubjectToForfeiture"/>
  <xs:element name="PercentageOfIssuedAndOutstandingShares" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_PercentageOfIssuedAndOutstandingShares"/>
  <xs:element name="LoanAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="bctg_LoanAmount"/>
  <xs:element name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="bctg_CommitmentsandContingenciesDetailsTable"/>
  <xs:element name="CommitmentsandContingenciesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_CommitmentsandContingenciesDetailsLineItems"/>
  <xs:element name="DiscountPerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_DiscountPerShare"/>
  <xs:element name="StockIssuedDuringPeriodShareNewIssues" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_StockIssuedDuringPeriodShareNewIssues"/>
  <xs:element name="StockholdersEquityDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="bctg_StockholdersEquityDetailsTable"/>
  <xs:element name="StockholdersEquityDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_StockholdersEquityDetailsLineItems"/>
  <xs:element name="DividendPerShare" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="bctg_DividendPerShare"/>
  <xs:element name="CommonStockOutstanding" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="bctg_CommonStockOutstanding"/>
  <xs:element name="PrivatePlacementDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="bctg_PrivatePlacementDetailsTable"/>
  <xs:element name="PrivatePlacementDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_PrivatePlacementDetailsLineItems"/>
  <xs:element name="TypeOfAgreementAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="bctg_TypeOfAgreementAxis"/>
  <xs:element name="AdministrativeSupportAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_AdministrativeSupportAgreementMember"/>
  <xs:element name="BusinessCombinationMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_BusinessCombinationMember"/>
  <xs:element name="FounderSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_FounderSharesMember"/>
  <xs:element name="MergerAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_MergerAgreementMember"/>
  <xs:element name="ProposedPublicOfferingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_ProposedPublicOfferingMember"/>
  <xs:element name="PublicSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_PublicSharesMember"/>
  <xs:element name="USTreasurySecuritiesMaturingMarch42021Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_USTreasurySecuritiesMaturingMarch42021Member"/>
  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_DocumentAndEntityInformationAbstract"/>
</xs:schema>
