How would this hypothetical be sorted out?

[Lotto]

Here's how we'd proceed under NCAA rules, where T's work differently: Team B shoots two FTs for the T, then we go to POI, which is A1's substitute shooting 3 FTs. If the foul by B1 is ruled a common foul, then players occupy the lane spaces and play continues normally after the last FT. If the foul by B1 is ruled intentional, no one occupies the lane spaces and A gets a throw-in at the spot nearest where the foul occurred after the last FT.