Even while he thinks about slipping away, Bull clocks Solas almost immediately. It's kind of hard to miss a familiar bald head and pointy ears like that but The Iron Bull is also very good at noticing shit. Solas really should remember that.

Even as he grins, there is a shrewdness to Bull's gaze as he waits to see what the man will do. Will he pretend not to see him even though they have made eye contact? He doesn't think so. If anything, he will guess that Solas is weighing his options and trying to figure out what Bull's reaction will be. So the large Qunari merely watches with mild interest, almost as if daring him to do something.

One corner of his mouth quirks up a bit more as he lifts his chin in acknowledgment.