Answer: It is necessary to cleave to the group in order to cleave to the teacher in order to cleave to the Creator.
It does not mean that the student cannot ask the teacher questions, clarify, express doubts, and even make some claims. This should always be in the form that does not harm their connection, the student’s self-nullification. This is the main thing.
The problem is not that he will not have enough respect for the teacher, but the fact that he will lose his connection with him.
From the 1st part of the Daily Kabbalah Lesson 11/10/13, Shamati #25 “Things that Come from the Heart”