I honestly don’t know if they want them separated or not. Mine were already saved as separate PDFs so that’s how I uploaded them. I know a lot of ppl are receiving RFEs for w2/1099s so I added those to each tax transcript file just to be safe. I also haven’t received my 2020 tax transcript yet because I filed for an extension so I provided a copy of my 1040, w2, proof of extension and proof of mailing my tax forms. I also included like 4-5 recent pay stubs. I may have gone overboard but I didn’t want them to have any reason to send it back lol