POI and Referee Magazine case play

[just another ref]

Here's where it gets interesting. The pass in question is deflected by B1, then intercepted by B2 about the time the whistle sounds. The officials must decide if the foul occurs before B gains control. If not, then as I understand it, Team A would have a throw-in at the spot nearest the deflection by B1. Nobody in the gym could figure that one out on his own.