Would be cool. If only Marvel/Disney would say something

Maybe her Nexus Event was getting a third season

She told Cap to pass the shield to John Walker instead.

getting a third season? season number does not seem to be a concern for any character; and does not seem to be a thing they are aware of. actors/actresses and crew might be aware of season number of any show, but not the characters.

It was a joke

Perhaps cause she had a new life with Steve after he returned the stones, and while he actually went back in time, she just went along with it, making her a variant, compared to Steves experienced life up to now.

I’ve always thought it looked ridiculously like Peggy (even if it is only a blur) but didn’t someone from Marvel come out and say that it isn’t Agent Carter? According to BTT on YouTube Agent Carter is gonna appear very soon (besides the What If?… series) and before anyone mentions it, yes I know her track record is spotty, just thought I’d throw it out there.

I was also wondering if that could’ve been Daisy/Quake, specifically from S7 when they were sent back in time and was dressed in the 1920’s clothing. I had a look at what Daisy was wearing during S7 though and they don’t seem to match.

married to Steve? if that was a Nexus Event, I would guess that he also would be a variant.

I think that she was there because when Steve went for the stones the TVA captured her but Steve scaped

I don't think those TVA clowns could capture Peggy.