Thank you so much - makes good sense now, and it helped to look at the 8606 a bit.
The 8606 for 2020 captures the recharacterized contribution as Traditional IRA for 2020.
The 8606 for 2021 has the total basis looking back to 2020's 8606 and then captures the conversion from Traditional to Roth. This will result as $0 for 1040 line 4b (even though the full 1099-R distribution from Traditional is still reported on line 4a)
Thank you!
