User blog comment:Chicken Bond/BIONICLE's Return?/@comment-5989773-20140708210830/@comment-5072107-20140709173648

Ugh, please no. Not only has LEGO stated on multiple occasions that BIONICLE and Hero Factory are completely separate, that would just be awful. The worlds are just too different, the plots wouldn't mesh together well at all.

And BZ was referring to the fact that he doesn't believe the two themes can coexist on the shelves. Sure, us older fans would buy both for parts and the like, but the target audience would almost surely either split or lean towards one theme or the other. It just wouldn't work.