Steve chokes on his food, but then laughs, at least for a second there. He also blushes, but that could be from inhaling his lunch as easily as from anything else.

It doesn't last long because the rest of what they're talking about, but for a second? Definitely there.

Then he just... shrugs. "There's plenty of blame to go around. I'm not telling you to blame me. Just that I thought you did." But also: a lot of them blame themselves, and Steve definitely does and would have accepted it. He just... really doesn't want to fight with Clint - at all, and especially not about that.