RebE, it seems that there is more license to argue in Torah learning. But your approach is good: focus on the other side of the argument. One of the references above say that even when you want to support your father, it is better to say that you disagree with the other side.
I saw an interesting difference in hilchos pesach: one doesn’t recline at his teacher’s table, but does at his father’s, as you can presume that the father will permit. I understand this that for the teacher getting respect is a high value, for the father the growth of the son is of higher value