they lose sight of their goal. all is reduced to your common sickening "honor-bound masochist/abusive tsunedre" relationship where it's nothing but her constantly insulting him or threatening him with a fork 99% of the time & him enjoying it.
It was really good too.
Episode 22 of Accel World confirmed it,
since the Dive Gear was shown as a predecessor to the Neural Link used in A.W.