B intercepts A's pass on the B10 and returns to A's 5yd line.
During the return we have PF on B at B's 10yd line, and BiB on B at the 50.
Wouldn't the PF get enforced at the spot?
Both are live ball fouls after the change of possession so A gets to choose which foul to penalize, which would obviously be the PF. It will be B 1/10 from B5 after 1/2 distance enforcement.
PS - added wrinkle - What if the PF was for sideline interference with contact or other PF UNS/nonplayer fouls that have dead ball foul enforcement? If this happens, then B would be penalized 10 yds from the 50 for the BiB, then another 15 for the PF (B 1/10 from B25). They couldn't penalize from the PF spot at B10 if it's treated as dead ball succeeding spot enforcement.
I'm confusing myself as I type this so someone please put me out of my misery if I'm off base......
