SLT Data migration from TWO different SOURCE tables based on a field

Hi, Does SLT supports bringing the Data from ECC to S4 where the selection is based on a field from TWO different tables in source (ECC)? Let's say, there are TWO tables, A & B and a common field X; need to bring the data where B-X = A-X into a Z TABLE (S4 HANA). any help is appreciable.

Thanks!

.