Re: After Romulus
One could just as easily argue that in CotEoF Kirk et al. return to a different-yet-remarkably-similar alternate timeline, of course. Same goes for FC.
The only "fool-proof" way we've seen of determining one's "timeline-of-origin" is by checking quantum signatures, as established in Parallels, and we don't see any such check performed in either of the above cases.
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