It’s all subjective right?
If Campbell doesn’t count as part of the “Payton tree,” then maybe we shouldn’t include Payton in the “Parcells tree.”
Payton was an assistant on Ray Rhodes’ staff in Philly (directly under OC Gruden) for 97-98 and then on Jom Fassell’s NYG staff from 1999 to 2002 (QB coach and then OC) before his 3 years with Parcells.
I say Payton probably learned more from Parcells and Campbell more from Payton (on how to run a whole football team), regardless of previous experience.