The snort might have been Jack, because not too long after it sounded Ianto was wandering the halls, barefoot and wrapped in a blanket. He had his trousers on and his shirt under said blanket, but then he wasn't an exhibitionist like the good Captain.
Yawning, just a little, he pattered through, then paused and squinted towards a lump that looked a little like a person. After a moment, he decided that it must be a person. He couldn't tell who, exactly, in the dark. "Alright, then?" he called and pattered closer, picking up his feet quickly, since the floor was chilly.