NCAAM Throw-in, potential IW

[Rich]

A has a spot throw-in on B's endline.

A1 throws the ball in the direction of A2 standing near halfcourt. B1 deflects the pass that then hits A2 (in the frontcourt) and the ball rolls into the backcourt. A2 is the last to touch and first to touch.

I do not work a lot of NCAAM games. Two questions:

(1) Could someone tell me based on the above whether the ruling would be different in an NCAA game compared with an NFHS game?

(2) Let's say that the T called a backcourt violation the second the ball was touched (not possessed) in the backcourt by A2. In an NFHS game, this would be easy for me -- it's an IW, no team control on a throw-in, so we go to the arrow. What's the ruling in an NCAA game (clearly this is dependent on the answer to #1)?

I was the L administering the throw-in, BTW. I'll let you know what we had once I see some replies.

Thanks.