Question
Where is the Mishna that it say whos Kovod comes first your Rav’s or your father?
Answer
Bava Metzia 33a, one must return an avaidah of one’s Rav before the aveidah of a father.
Question
Where in Shulchan Aruch does it say you have to respect your father in law?
Answer
Shulchan Aruch, Yoreh Deah 240:24