Re: Respect/Lack there of.
A) Don't bring a senior guest on a visit without checking with the head instructor in advance. That way everyone knows the score, and even someone who is teaching in the instructor's absence won't be caught off guard and unprepared.
B) If you do bring an unannounced guest of that stature...don't take offense. You have already broken reigi. So don't be surprised with any outcome.