[Adam]

Thanks for clarifying. Knocking A2 down in this case might mean you should call it and it might not. It really depends on how hard the bump or push was.

Think of it this way, take away the shooting foul and assume A1 gets his shot off clean and it goes in. If you think B2's foul would need to be called in that case, you should call it here. Cleaning up rough play sometimes means calling something out of the ordinary (like double fouls), and a false multiple here isn't a bad choice.