"Oh no, I'm just thrilled," he says, voice heavy with sarcasm. In truth, he's both frightened for what his appearance could mean and glad to see him still alive. He picks his glass back up, schooling his expression more carefully now.

"What happened to you? You and the big bro finally rumble hard enough to tear down the walls?" Also not strictly possible, unless someone actually let them out. It's more likely to Gabriel that Lucifer has found some way to extend his consciousness from within the cage to visit him here, in his dreams.