Alan shrugs — a stiff edgy movement that best boils down to yes — and shifts to make room.

"I’m sorry about the classes. I should have said something." He was a little busy not speaking to anyone, about anything, but he knows the inconvenience. "I... lost track of time."

An afterthought:

"How have you been keeping?" Alan looks over sidelong, seems to be avoiding Kain's eyes. "It'll be done soon. If you're hungry."