how postgres bulk insert affect Debezium?

we have an Postgres instance with multiple db (A, B, C, D, etc).

we set up debezium cdc on db A ONLY. but we also need to bulk insert millions of rows to other db like B...

it seems that debezium cdc still need to scan the WAL of B and filter out events. so bulk insert may slow or block debezium.. am i right?

how to avoid these kinds of blocking or slowness? should we stop debezium connect temporarily when bull insert? or is there any way to skip scanning database B's WAL?

Thanks