There's a moment about twenty minutes along, where Quatre's shoulders tense and his eyes suddenly jerk open.

He doesn't move, other than taking a slow breath, before he relaxes again. There's a momentary pause, and then he straightens. He smiles at Trowa, embarassed, and checks his watch.

"Sorry," he says in English, because he's awake enough to realize that's his default with Trowa but still just-woken-up enough to forget that they were speaking French before he drifted off.