It was just a minor twitch of muscles -- probably not even something the other patrons of the coffee shop noticed -- but suddenly he was primed for fight or flight. He'd felt the struggle in his brother, all of his senses going on high alert until he forced himself to relax when Sylar brought himself back under control.

"Oh?" he asked, curiosity warring with concern. He was sure, after what he'd discovered in Ireland, that he had a lot more abilities than he was actually aware of. If he could absorb them from people who weren't using them at the time, as was the case with DL's phasing ability, then who knew what he'd picked up...