Final Fantasy XIV Auto-Attack Video

[wind]

I think you're drawing parallels to the current system, which has manual input lag. AA if done even half correctly, does not have input lag because it's essentially a system function.

I'm taking into account this current system yes, as well as XI's system(both done by Matsui). Both will/have AA and in XI the GCD actually occurred AFTER the spell was used and was a horrible 1-1.5secs.

Also you're right my example was indeed being a bit presumptuous saying AA WILL sneak in both times. Which it wont the majority of the time if a person times the spell correctly. But that's not to say it will never happen also.

If AA is triggered and a spell is done roughly at the same time, you're correct the spell will supersede AA but as soon as that cast is done, AA will finish(if AA doesn't reset timers, which majority of games it doesn't).