Rudolph - Kittle OPI non-call / call

Yelled it at the screen when it happened but what are you gonna do? One crew called it on the field, one did not. They simply were not going to second guess themselves to death with the new challenge rule this year.

Offensive PI in both cases in my opinion.

Or neither in both.
But from what I see they look the same. What in the rulebook says those two are different?