My prediction is that we're building to a point in the story where the only time Kirito will have interactions with Asuna, outside of school, is in FOG later in evening/at night. So with Asuna now being okay with having sex in FOG cuz "it's not real", I would hope we get a larger variety of battle sex.No, it was a scripted event. I mean during regular combat, with both being there, like the few fights before the boss.
If you get hit by a status effect or take to much time to kill, something will happen in the background. Many of Asunas stats could be changed or kept at the level they are depending on the players playstyle.
The scripted scene was definetly great tho, only missing part is Asunas POV now.