Quote Originally Posted by NinjaPanda View Post
I'm not entirely sure where I should post this theory, but here goes. Upon rewatching the opening CS of XIV, we saw that Midgardsormr was attacking the empire and laid to rest in Moh Dhona releasing all of the primals. This was the birth of the primals which set out to take new refuge onto the land. Bahamut was the only one who was not summoned because he was already imprisoned in Dalamud, thus meaning he is not a primal. Nael knew that Dalamud was more than a lesser moon as he referred to all primals as "False gods." I have a strange belief that Nael knew that Dalamud was actually the prison of Bahamut and felt that Bahamut was the one true god to cleanse the impurities of the land.

Just my theory.
If you take knowledge we DO have, it's safe to assume that a powerful Wyrm/Dragon can speak to people whether they're imprisoned or sleeping. Nidhogg speaks to and controls the Dragoon from the AF Quests, so you could say Van Darnus might have been controlled by Bahamut. I'm not sure if we can rule out Bahamut not being a Primal as we don't really have a safe definition of what they truly are. You could also assume that Bahamut tells Van Darnus that the other Primals are false gods and that only he (Bahamut) is the true god. Bahamut could easily be The One that Ifrit speaks of but I'm not so sure, even with Odin I wouldn't be sure that HE was The One. Got a feeling this goes really deep. So many cards need to be brought to the table:
Ascians, Paragons, Dravnians, the rest of the Archons. Whomever taught the Garleans about the Primals or where they learned about the Primals and their power, and Ishgardians. I have a feeling many of these answers are in Ishgard, they're more of religious zealots than the other 3 city states so I'm just assuming and hoping (lol) that they have more passed down knowledge.