DY: And after his father?
Side question… When an older rabbi’s long-time teacher is no longer living (alas), does the rabbi ever defer to a much younger rabbi for personal psaks?
I am guessing rabbis have their own rabbis. Like doctors go to doctors.
Is age a factor?
I just thought of how the Chabad Rebbe of blessed memory would pray at his father-in-law’s kever. Did he have a rabbi to guide him after his father-in-law, of blessed memory, passed?