Spoiler in Plain Sight?

I know the Russos admittedly use fake footage in trailers in order to throw people off the scent of the true story, but if we can take for granted that the general theme of the Endgame is accurate, what does the Spider-Man trailer suggest to us?

The action of Infinity War took place in roughly 24 hours, give or take. It seems clear that Endgame won't be a story that picks up the moment after Thanos' snap only to resolve itself in another 24 hours of the hero's lives. Black Widow's hairstyles in the trailer alone suggest a period of years will have transpired since the snap and the resolution, as do other things we see.

Turning to the trailer for Spider-Man: Far From Home, what do we see? For starters, the obvious spoiler-- Spider-Man survived the snap, or was resurrected, or otherwise returned to Earth. However, we also see that he and his classmates are still young, probably high school juniors now. If years passed between the Snapture and the events of Endgame, something has happened to roll back those years, because it's clear that Far From Home *does* take place shortly after the Snapture.