Hello John,
Hence it's not suggestable to make Direct Posting Boolean Turn ON instead of using Bank Account Posting Group.
Because, While doing the transaction if you select the Balancing Account as a G/L Account then your Bank Account Ledger Entries not going to Impact and It will come issue while doing Bank Account Reconciliation.
In Bank Account Reconciliation, For Balancing the statement system take form Bank Account Ledger Entries itself.




Bank Account Reconciliation

Hope It will Help You,
Please Verify my answer so that it will help others community also.
Thanks