I understand what is being said about advantage/disadvantage but I think some of you are expanding that concept a little too much. I look at it regardless of what is going on with the ball if the contact away from the ball is bad enough to warrant a foul then it should be called whether the ball goes in or not. Basically I see it as A2 is gaining an advantage over B2 because they are getting position illegally. I am tempted to think that going with the definition being used in this case to justify not calling a foul because of advantage/disadvantage you could also say that if the ball does miss yet it comes off of the rim to the opposite direction of where A2 is then there is no advantage gained, and I personally think that would be called as well.