The grumbling, though it's directionless, does eventually draw Dylan's attention. He's fiddled with his food for a while, though he knows his metabolism requires him to eat more than most people, and so far he's eaten very little. What his body needs, though, his mind doesn't want.

So he eventually looks up from his plate, for the source of the grumbling, and sees a Klingon sitting nearby, apparently lost in his own thoughts that seem little more cheerful than Dylan's.

Dylan knows little about the Klingons; some of their history, at least as that impacts on the Federation, was in the books he'd read, but he hasn't had the chance for much conversation with any of the Klingons on board.

It can't hurt to take his own mind off the darkness of the thoughts that plague him, so he may as well make some attempt at engaging. So he lifts his chin, and nods, briefly.