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  <xs:element name="CommonStockSubjectToPossibleRedemption" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_CommonStockSubjectToPossibleRedemption"/>
  <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="SponsorAgreedToLoan" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="bctg_SponsorAgreedToLoan"/>
  <xs:element name="PaymentOfCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="bctg_PaymentOfCosts"/>
  <xs:element name="AggregatePrice" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_AggregatePrice"/>
  <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="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="FairValueMeasurementsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="bctg_FairValueMeasurementsDetailsTable"/>
  <xs:element name="FairValueMeasurementsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_FairValueMeasurementsDetailsLineItems"/>
  <xs:element name="MaturityTermDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_MaturityTermDays"/>
  <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="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="PublicSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_PublicSharesMember"/>
  <xs:element name="USTreasurySecuritiesMaturingMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_USTreasurySecuritiesMaturingMember"/>
  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="bctg_DocumentAndEntityInformationAbstract"/>
</xs:schema>
