ok i have had a LOT of time to think about these parallels.

in itsv, miles isn’t fully spider-man yet. he’s wearing the kids’ costume that doesn’t even fit. peter is the experienced spider-man, wearing the suit, who’s telling him he knows better and that he should sit this one out. but miles doesn’t. he takes his leap of faith and becomes spider-man. 

in atsv, miles has a brand-new suit. he’s been spider-man for longer, and he’s had time to figure out what works for him. 

peter comments on his new suit design and says it looks like he’s bleeding from the armpits. it’s meant as a joke, but it’s also a subtle nod that a lot of time has passed. peter doesn’t quite get how much miles has changed and come into his own. 

in the scene where they have a heart to heart, peter is wearing a bathrobe covering up his spidey suit, showing how he’s out of touch with miles. he’s not the best mentor he can be right now. miles is the one fully displaying the suit. he tells peter he wants to be spider-man in a different way—peter told him in the first movie to “do it like you,” and that’s exactly what miles is doing. 

in both scenes, peter thinks he knows better. but miles flips it right on his head and proves that he’s gonna do his own thing.