User blog comment:MyProjectAlicization/Kuroyukihime - Kirito and Asuna's daughter?/@comment-76.23.58.169-20131015034855/@comment-1173941-20131015044717

The Brain Implant Chip being mentioned in Alicization, and NerveGear's cameo are basically just hints that the world of Sword Art Online and Accel World are probably connected.

But no real connection to any of the characters have been made, between the two series, (at least not that I know of, seeing as the Accel World novel translations are only up to Volume 5)