Ah. That tells Jim all he needs to know, and at Spock's question, he promptly shakes his head.

"No, I remember that clearly. I'm from after we finished that mission, and came back to Yorktown." He went into further detail with Bones, but then Bones was from a little farther ahead than Spock, it seemed. So he doesn't elaborate much more than that, though he won't deny Spock the details if he asks.

"The timeline discrepancies aren't the most worrying thing you'll have to think about here, for what it's worth. The three of us aren't too far apart in terms of timeline at least, so there is that." It'd be more complicated if, say, any of them came from a point in time when they'd only just met.