"I thought that I gave him something to do, but he shrugged it off and didn't seem like he'd be interested."

He said that he needed Tony to get a look at the technology and invent some kind of machine that would disable or cripple the Asgardian tech, as well as upgrade their own skiff so it wouldn't be affected, in order to help them rescue all the other people left down there.

"Look, I'm not trying to be unsympathetic. I feel for him, you too, I just don't know how the heck I'm supposed to help other than what I'm doing. There's people in there still getting hurt, trying to save them in my priority."

And Bucky.

He wanted to follow Bucky, make sure he was okay hunting, beg more memories from him, but he knew that was a bad idea.