I don't fully have a problem with it, mainly because I see it like this: we don't know what an Atomos is fully capable of. In XI it was what was sending adventurers back in time, and from what it looks like in XIV, it spits out voidsent in the Crystal Tower raids. Who is to say the streams don't cross in some way (I know, I know, DON'T CROSS THE STREAMS!) and that adventurer trying to get to Jeuno in the past gets dropped outside of Ishgard?
I mean. Gilgamesh, in some way, traveled to Eorzea somehow from wherever he might have been before. Shantotto, despite the fact that she knows how to do that sort of stuff, we're not sure how and what sort of things she did to travel (just that she figured out a link between worlds) but she did. So I can see it, but getting too crazy with it, as mentioned earlier in being more the foreground story might be overbearing. Depends on how it's gone about for me, and as long as it's plausible, go with it. RP is, after all, about creativity and making things work within boundaries that are either preset (lore and slight lore bending), or boundaries you create yourself.
I mean. Gilgamesh, in some way, traveled to Eorzea somehow from wherever he might have been before. Shantotto, despite the fact that she knows how to do that sort of stuff, we're not sure how and what sort of things she did to travel (just that she figured out a link between worlds) but she did. So I can see it, but getting too crazy with it, as mentioned earlier in being more the foreground story might be overbearing. Depends on how it's gone about for me, and as long as it's plausible, go with it. RP is, after all, about creativity and making things work within boundaries that are either preset (lore and slight lore bending), or boundaries you create yourself.