He hates it when he misses jokes. (It drove him insane when he was learning English.)

"Ah, you almost had me."

Chekov wonders, for a moment, if Kyle doesn't like living alone if he's staying at an HQ. It'll be weird for Chekov, actually-- he's used to the hustle and bustle of the Enterprise, where there's always someone awake and all he has to do is leave his room and seek them out. Or the Starfleet HQ, which was much the same. In Russia, he had his parents.

But he won't ask. It's too personal.