Claire definitely noticed how long it took for him to move even a little, and also to say just a few words. In that sense, he was sort of like the zombies she was familiar with. They were slow and lumbered along at a bit of a leisurely pace, though they could throw themselves forward to attack when they wanted to. Still, Adam seemed far calmer and more gentle than those creatures. He also wasn't half as ugly.
"Right," she replied with a nod and a smile. "I, um...hope I'm not disturbing you?" Not that it looked like he was particularly busy, but still.