Back to the Future isn't relevant to our kind of time travel anyway, but I can see why he would be more cautious by then. It probably sounded more risky than necessary, but none of us are good at letting things lie if we can think our way around it.

[He doesn't know about Tony's daughter or anything, but Bruce knows that what they all went through would change them. Make them more cautious, perhaps, or less likely to take chances. And more than that, time travel is a potential nightmare. They could mess up everything given the chance, and he has only a vague understanding of the possibilities to start with. But he understands why they would try regardless. He would right this instant without any hesitation.

Bruce considers the question.]

I believe Steve is before Thanos entirely, somewhere in the gap after the break up of the team, although he's filled in by now I think. Tony's closer to my point, but before the stones were destroyed. Thor and our friend Valkyrie come from before we got attacked by Thanos in space. Loki's ... [He pauses.] He knows he's dead. [Bruce's feelings about Loki are more complicated now; he's no longer an enemy, not a friend.]

I think we're all hoping that he and Steve figure out their problems. I know it got ugly, but we're .... [He glances away and makes a face.] I hate saying family, it sounds cheesy.