Board Thread:General Discussion/@comment-26167440-20160111225919/@comment-679780-20160126001353

Sonic Adance was made after Sonic Adventure 2 si Chaos Control was around then.

And it could still be Chaos Control that was used inadvertedly by Super Sonic at the last possible moment after defeating Super EggRobo. Just not used verbally because we are uncertain what happened at that last moment and the game had limited dialogue. But we know for sure Tails noticed Super Sonic from a distance because of a flash of light similar to Chaos Control.