Reference Other tables in SLT Transformation

Hi,

I'm wondering if it's possible to reference/perform joins to other tables when performing a SLT table load. I think I'm aware of the below scenarios, but hoping to see if there are other ways to do it:

1. Use ABAP to reference other tables
2. Create a table in the sender system with the references in place already
3. Bring the tables as is over to the target system and perform the references in the target system (either directly or via a view)

To provide some details on my specific scenario:

I'm working on migrating tables from ECC to S/4 HANA using SLT. We have a requirement where we want to bring in data from joining 2 tables (sender system) into 1 table (target system).

Thanks for any help!

Walter