"I didn't, no. I was at work, in the middle of an experiment. I stepped through a door in one of the labs and found myself here instead of where I should have been." No mention of being Spider-Man, time-traveling or anything like that. Very good.
Once they were both in the elevator, Miguel selected the symbol for the food court, and then pointed at the hand rail. He couldn't help but be reminded of Darcy's first trip in the elevator, where he'd had to explain the actual workings of one to him. At least Bertie didn't come from that far back in time. "It moves fast, you might need to hold on," he advised, just as it moved off.