So when Noct's HP is at 0, and he hits "X", what exactly am I missing before the game over screen? He stalls for a good 10 seconds before Game Over, like the game is expecting me to do something to prevent it, but I can't use items nor will the guys that are still alive heal him. Is there a point to that 10 second 'pause'?
You can use Phoenix Downs in that period to revive yourself.