User blog comment:WarAeagleU27/Problem with Stan Lee's cameo in GOTG Vol 2/@comment-8016-20170516152247

He only says he was working for FedEx. He doesn't make any specific reference to making a delivery to the New Avengers Facility or misreading Tony Stark as Tony Stank. It's easy enough to assume it was a different, offscreen instance of him working for FedEx.