"No, you didn't, but people come from very different time. Loki was here. He came from the Battle of New York. He had no memories of anything that happened later. He learned through the Time Variant Agency, but that's a very long story for another day," Steve said.
Steve took the shot. The liquor passed through him, leaving a pleasant burn, even if the alcohol wouldn't affect him. "You didn't come back from that mission. You scarified your life to save Clint," he said, still looking at the glass. "You came here before, but the bus sent you back. We don't know what happens when people go back. Most people think that you go back to the same point in time you were taken, but I don't think so." Not if his theory about getting old and wearing a ring was correct.
"There's also a theory that says that the bus keeps around the people who get involved. That seems to be slightly more accurate." He looked at Natasha. "I need you to get involved, Nat, because I can't lose you again."