If he went into how his timeline even came about, then you would really need that drink. And probably a nap. Definitely a nap.

He nodded gratefully when his other self brought him the cup of water, sipping slowly. Oh, god, fresh water he didn't have to boil. It seemed like such an insane luxury now after months out on that wilderness. His eyes watched James though, letting him parse what he'd just said, and ask his question as he kept his mouth from turning into a permanent pucker.

There was a pause as he considered how to answer, trying to model Elder Spock as much as he might, though he did not have the moral quandary of being ahead in a time-stream. Just different.

"I'm the product of it, in a way," he settled the cup in his lap. "And I've met someone where I had no choice but the believe. Kind of like right now, except they were much older than their counterpart."

Again he was quiet, debating, his brow furrowing and eyes going distant for a beat as he mustered his next question. The important one, to really determine how different they were.

"Is Vulcan still in existence here?"