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Thanks @JamesG1. So I think I see what it is, on the 8949 there is this check box "Check here if this summarizes multiple sales":
Screenshot 2023-03-07 161346.png

This appears to be what triggers it.

There is no 1099, this is from a .TXF file import from a Crypto Accounting program.

I do have the itemized 8949 and it's over 200 pages long (literally a 200 page pdf of form 8949, several thousand transactions). I also have the same data in CSV/Excel format which could be printed much smaller.

Please advise how I would proceed here?