Seeds of 7.0 and on?

[Linadae]

I believe Emet-Selch implies that the people who made the murals were sundered Ancients who 'half-remembered' what they had gone through. Which also implies it happened after the Sundering.

World lore from ARR confirms that there are fragments of Pre-Sundering memories floating around. From the names that Keepers of the Moon use (Most predate the Sundering) There was also talk of time before the Calamity where 'Gods walked Eorzea' but they fled before the First Umbral Era abandoning mortals to the Calamities. To a Sundered, Amaurotines would certainly look like gods in a fractured memory.

[Erendis]

There was also talk of time before the Calamity where 'Gods walked Eorzea' but they fled before the First Umbral Era abandoning mortals to the Calamities. To a Sundered, Amaurotines would certainly look like gods in a fractured memory.

A while ago someone here mentioned that unsundered Ascians spent some time with sundered people before resorting to calamities (I might have missed that part in msq since I do not recall it) so it would fit that lore part.