Is there any lore justification for being able to do previous expansion's sidequests?

[Kranel_San]

I'm on EW, and I'm wondering if the WOL could conceivably time travel at will. I'm asking because I'm doing side quests from previous expansions and trying to justify the headcanon for immersion purposes. Basically, I'm looking for a way to explain why characters still talk to me as if I'm in ARR, HW, SB, or ShB, as the case may be.

I know that there's a time bubble thingy, but I'm hoping for something more satisfying than that. Perhaps a function of the Echo could justify me "being" and feeling as if I'm in that moment in the past, as opposed to just seeing or remembering it.

Do you also need a lore justification for why players pop off into thin air regardless of the location where they have logged out? Or maybe a lore justification for why you can continue normally without feeling exhausted despite not eating or drinking for days/weeks?

Remember that this is a game. Not every little thing has to have a lore justification.