In ARR there was brief cut scene of leviathan taking down the mega ultra Garlean airship (cant remember the name of it) during the first time you see the Garlean generals for the first time.
I hadn't played all the way through 1.0 so i thought that event happened during 1.0 but upon trying to search for a clip of it on youtube i couldn't find anything about it.

And upon closer inspection of the ending cutscene of 1.0 it shows them all riding on the airship.

So did this event happen sometime in the 5 year gap between 1.0 and ARR?