As a BR dancer, this is probably my biggest cross-over challenge: tuning out the "noise" he makes with his feet and having confidence that what I'm feeling from his body is what he wants.
At the risk of hijacking this thread into a continuation of the recent 'Cross-Over' one, I would say that there arre two things here to consider.
The first is that a BR leader may be
relatively unaware of the extend to which his upper body is not 'still' (particularly laterally) during step movements, and is actually
generating too much step-based noise, which then becomes hard to tune out of.
The other is that while a decent BR dancer already leads by intention: the body moves first; the different degree of forward balance, and the stress on upper body movement for AT leading means that a beginning AT leader may be getting the balance of these elements wrong while sincerely believing that he is doing what the instructor suggested. A BR analogy [BR technique alert: do not read next sentence if you want to read exclusively about AT!] might be a beginners attempt at CBM & sway. They
think they are doing both, indeed they
feel that they are doing both to a huge extent, but no one else can see or feel a thing. The opposite can be true: we can believe that we have eradicated something which is not helpful in AT, but it's still there really...
Of course this only applies if the leader is a beginning AT dancer from the BR world. If the issue is that a beginning follower can't tune out an experienced leaders steps, then either the leader has got lazy and into bad habits and is allowing his body to create the
wrong noise, or possibly, that the follower is so used to tuning into step patters, that the body has (possibly subconsciously) actually gone looking for them. That the result is confusing is inevitable, given the relationship between lead and steps in the dance.