Board Thread:General Discussion/@comment-5210173-20130725170743/@comment-815612-20140511192159

The crossover was apparently canon to Generator Rex continuity at least, given the Bug Jar's state shown in the series finale and Alpha being mentioned in a video game. Of couse, this doesn't necessarily prove whether or not it's canon to Ben 10's continuity. My stance is: consider it possibly canon until the writers confirm without a doubt one way or another.