#he has no idea usually
New headcanon:
Trigel was super curious about Altean alchemy. She asks Alfor all sorts of questions about it whenever she gets the chance. He’s happy to answer her questions- even the really weird ones that he doesn’t quite understand himself. Half the time he only confuses her more, because, honestly, while the man has a knack for the alchemy thing he also doesn’t understand half the things he’s made (case in point: the lions of Voltron).
Trigel almost finds this more frustrating and baffling than the prospect of Altean alchemy itself.