"Peggy—" Carter? Peggy Carter. His brain skips at the name, and there's an obvious pause while he processes it, expression blank. The name doesn't strike the same cord for him as it might for others, but the general idea is there.

Between that and the decade she fell out of, it's easy to make the connection to Cap. Except she's still standing there with her hand out, so maybe focus, dummy. The awkward pause only lasts a second, maybe two, but it's impossible to miss before he accepts the offered handshake.

"Barton. Clint Barton."