Board Thread:Naruto Discussions/@comment-24531362-20140831150337/@comment-1512913-20140903193848

Just a correction, Black Zetsu didn't infuse Kaguya's will into Madara. All he did was force Madara to absorb chakras from everyone cocooned with the roots. Madara, having been unable to control such large volume of chakra lost control, which allowed Kaguya to take over.