"Uh-huh." He gets what Raphael is saying, but Dean's skeptical because it's Sam's head, and Sam's head has been through a lot lately.

"Can this backfire on him? When the wall fell that kept out his memories of the Cage..." Dean trails off, hoping Raphael can fill in the rest on his own without needing Dean to finish. He wouldn't actually be willing to talk about Sam's problems like that with Raphael if he didn't, by now, really believe he was trying to help, so that's something.