Quote Originally Posted by Nalien View Post
IDK, if I was an NPC, I'd be asking what Primal that's based on, where/when the WoL battled it.
I mean, the WoL doesn't have to have battled it. Just have been "exposed to its aether upon its death". That's the explanation as to how a SMN who has never done Coil is able to summon Demi-Bahamut - they were in Eorzea when the Calamity occurred.

Who else was present at the Calamity, and (apparently) died and dispersed its Aether afterwards? Phoenix!

Now, admittedly, there's apparently some strange amnesia shenanigans going around, and that's why no one mentions Phoenix, or is able to give any details as to what happened at the Calamity. So the conversation might go:

NPC: When did you fight Phoenix?
Me: I didn't. I was immersed in its Aether during the Calamity.
NPC: I don't remember Phoenix at the Calamity!
Me: I doubt you remember much of anything about the Calamity, just like anyone else.
NPC: So how do YOU know Phoenix was there?
Me: Echo.
NPC: ...oh, okay.