That's irrelevant to my point.
We're not talking abou traveling between realities.
We're talking about dude from PRESENT reality A, goes to PAST reality B only to return to PRESENT reality A.
What if "Present" Legion could give crucial information to "Past" Legion? That'd be insane.
MU Azeroth is "now".
AU Draenor is "back then".
MU present Garrosh traveled to AU past Draenor.
If that Archimonde was from the present, then the Legion was time-traveling. How? Help from Kairoz?
The Legion cannot possibly time-travel at will. If it could, the whole Warcraft story would implode on its own stupidity.
If Kairoz did help, perhaps the Infinite Dragonflight is somehow connected to the Legion?
Afterall, Kairoz did want an infinite army. Isn't that what the Legion is supposed to be?
Perhaps Kairoz was being manipulated?