I come with less questions, proportionally, than the other times, but you won't note it, because the fourth Book is much larger :P
20. τὼ δ᾽ αὖτ᾽ ἐν προθύροισι δόμων αὐτώ τε καὶ ἵππω,
21. Τηλέμαχός θ᾽ ἥρως καὶ Νέστορος ἀγλαὸς υἱός,
A) Which does αὖτε mean here? They have just arrived at Menelaus for the first time, so "again/back" doesn't make sense. Is there ...