[For all he'd been there and lived through the very thing Irvine is talking about, there's no mistaking the clear confusion in Zell's expression, as though Irvine were speaking an entirely different language. He runs a hand through his hair with a nervous laugh, half an eye still on that gun just in case.]

Didn't we fix that already? I mean...I just saw you, man. We're done with that. We're heroes, man, all of us.

[Which...doesn't explain why they're here and now Irvine's got him wondering.]

Unless...nah. It was definitely you guys. I definitely wasn't making you up so if it wasn't real, it wasn't real for any of us.

[He's trying to sound confident. His tone suggests the person he's trying to convince most right now is himself.]