It was a bit like teaching his grandmother to suck eggs when the young director was showing the veteran actress how to act. (*) teaching someone who was more experienced than he (*) teaching someone who was younger than he (*) teaching someone who was more stupid than he (*) teaching someone who was more willing than he
This is a companion discussion topic for the original entry at https://english.best/questions/23679,it-was-a-bit-like-uteaching-his-grandmother-to-suck-eggsu-when-the-young-director-was-showing-the-veteran-actress-how-to-act/