Everything about his instincts say something's wrong when he believes he hears the voice suddenly. He casts a look around, the voice didn't sound raised, but he heard no one approach him and with his senses heightened again he knows that wouldn't have escaped him. But something feels wrong to say he heard it.

At least he recognizes the voice. Though, he still doesn't drop his guard.

"Xavier?" He turns and finally catching sight of the other man. And he's not anywhere close enough to have spoken without shouting. Maybe he threw his voice? But that still doesn't feel right. He doesn't feel like he heard it.

Still, he waves to the man, though awkwardly, as he starts to make his way over.