Looking at the PBP, in the 1st quarter PP came in right after Kyrie left, with 3:23 left, he played the whole 3:23, Kyrie sat that whole time.
Kyrie came in to start the 2nd, they shared about a 1:30 (Kyrie scored on one of the 2 Nets possessions) then PP came out, Pritchard sat the rest of the 2nd.
3rd quarter, Kyrie went out with 2:18 left, Pritchard came on at 2:05, he played the rest of the quarter, Kyrie sat.
4th quarter, here is the first time they overlapped for significant time, Kyrie came in to start the quarter, but this time Ime rode with PP for longer and they shared about 7 minutes.
So it looks like Ime was staggering them, only overlapping for 2 defensive possessions through 3 quarters but then in the 4th PP was playing well, Kyrie and the Nets weren't attacking him so he rode with him.