It seems like almost every Hail Mary I see in College and the NFL has some level of PI but it is literally never called. I’ve seen much less egregious contact called on other plays.
Is it just expected and the referees think it’s too difficult to defend without PI?
Usually everyone is looking at the ball and they run into each other because there are 6 or 8 people going for the same ball, whether to knock it down or to catch it. Some actions that are normally called pass interference may be overlooked if the defender is attempting to catch or bat the ball rather than focusing on the receiver.