Jaime may know Tim, but he doesn't know him as Tim. As far as he's concerned, he's just Robin, the one that tends to grind his teeth when he gets frustrated (and rightfully so; the Titans aren't a bunch who just anyone can command). Either way, right now, he neither sees Tim nor Robin.

All he sees is a blank wall, but one where Khaji swears up and down a person is lying in wait. He stops in mid-step, and though it's terrible for the secret identity, he stares at the wall and hard.

At least he does until someone elbows him out of the way with a growled, keep walking, kid, because nobody likes anyone who stands around in the middle of the sidewalk.