Nature of the Sound

[Kesey]

This is an interesting theory for sure. But I have equated the Ronkans with Allagans, not the Ancients. As they seem to have happened after the Ancients but before Ardbert and company save the world. I also don't think the Allagans and Ronkans are directly related, but just happen at parallel times.

My reason for this is in the first set of caves, before we go Fanow, shows a brief time line of the first.

The first picture seen here is kind of a mystery, but I'm assuming that it represents post-sundered Azem saving the world, but this is just a guess. Or it could be one of the two sets of Ancients summoning Hydaelyn or Zodiark. But it clearly comes first in the sequence:

The second is clearly the Ronkan Empire, which comes after the first picture:

The last one is clearly Ardbert and company defeating Shadowkeeper. This confirms they are in chronological order because we know Ronkan stuff came before Ardbert and company, because Ardbert explores Ronkan places after they are in ruins:

Now I could have read this wrong, but I'd like to hear how it fits into this theory.