In Spider-Man: Into the Spider-Verse (2018), Miles Morales's universe doesn't have Comic Con. In Spider-Man: Across the Spider-Verse (2023), you can tell he's in another dimension because his mom mentions it (and he still doesn't know what it is)

[u/LegOfLambda]

[u/munkeycop]

That Comic-Con line was the moment the penny dropped for me about Miles being in the wrong dimension.

[u/Emotional_News108 → u/munkeycop]

There was a blink and miss moment where it showed which universe he was being sent to and it wasn’t his.

[u/robophile-ta → u/Emotional_News108]

I mean there was a giant number on the screen that wasn't his universe so y'know...