[JRutledge]

You cannot foul another player whom you did not contact. This can only be a foul on B1 for pushing A2.

Now, to send a twist to this play. If you felt they were purposely pushing A2, why not call an intentional foul? They clearly were trying to disrupt the shot if you feel they were doing it on purpose.

But it must be noted that A1 still gets the basket if made, as the foul happened during the continuous-motion portion, so the basket could count if it goes in. But only A2 could shoot if they were in the bonus or you do what I suggest and call the intentional foul.

Peace