[rockyroad]

Originally Posted by HokiePaul

Agree with this.

I know this is a hypothetical for discussion, but who's primary this is isn't the most important factor here -- you want to get the foul. The lead who is focused on the play may not know whether the C is in position yet to take over their primary ... blow the whistle. If the C is in position to see the call, blow the whistle. As the lead, I would probably defer to the C on the double whistle, assuming that if the C has a whistle, then they were in position to see the play. If I'm the C and was in position to make this call, I tell my partner on a double whistle, "I got it, [name]" and report the foul.

Agreed.

The most important thing is that we get the foul. If the two partners want to turn it into a pi$$ing match about whose call it should have been later, fine. But get the call on the court.