Retirement tax questions

I printed out the actual Form 8606 that was generated by Turbotax to follow along the math.

 

Line 1 - 6000

Line 3 - 6000

Line 4 - 0
Line 5  - 6000

Line 6 - 0

Line 7 - 0

Line 8 - 12000 (this is for 2020+2021)

Line 9 - 12000

Line 10 - 0.5

Line 12 - 6000 (this is the nontaxable portion of your distributions...and later it DOES apply tax to the remaining 6000)

 

Where should it get factored in that the remaining 6000 rolled over should not be taxable?  It was non-deductable money I put in, and then I converted it.