at least until they started commenting on it feeling weirdly empty.
...which MC also noticed. He knew why and they didn't, but we, and MC, know pretty well what they experienced in the Interim.
Though looking back at your earlier post, I see I read a "how" in there that wasn't there--I read "we don't know
how those we saved perceived their surroundings." If you didn't intend for "how" or something like it to be there, I may be addressing a point you aren't trying to make. But in that case, I'm not sure I understand the point you are making.
And there's a good 5 to 10 years from where the world is restarted at until he meets the LI in most of the endings.
Fair, and this dev has already made a similar point in N&T--memories, or at least details of memories, fade over time.
We probably have to leave this as "I don't know," because a lot of this is guesswork. It does seem that the Cycle gave more than it promised in all the human endings (except Selene's, which is a special case)--it promised only that the LI would have some subconscious recognition of MC, and that she and MC are tied together somehow. What we see with all of them is a strong, immediate attraction, generally with some sense of "I know we're meant to be together." Only with Natalie does MC probe for Interim memories (and finds none), but I don't recall any of the rest mentioning any, either--except Kara. We see Kara remembering MC more clearly, and with more detail, than any of the others. I don't know what to make of this, but I also don't think it's just random happenstance.