Some fight details...
We killed roughly 10 sets of Absolute Virtue's Wynavs (3 in a set) simultaenously using timed -ga3 nukes, hoping for a weakened AV similar to how Ying/Yang -> Dynamis Lord works. After killing almost a dozen sets, it appeared to do nothing as AV still spammed various 2hrs (repeated a few as well), Aeroga4/TornadoII/etc, and various TP moves.
Once AV's wynavs were killed and AV hit ~95% HP, it's 2 hours, spells, and TP abilities stopped.
We used BLMs and Kraken DRKs for damage. AV has pretty high evasion, and about 1 in 3 nukes were badly resisted. Around 30% AV started to resist thunder, so we switched to ice, which was successful for awhile, but it also eventually got resisted.
It lasted 97 minutes 18 seconds from damage start to finish.