Board Thread:Theories and Speculation/@comment-25139119-20150807165411/@comment-9782468-20150808182119

It was my understanding that everyone still had a tiny bit of Kurama chakra left, and that's why Naruto could make it grow when he had more chakra. I don't think it was ever completely gone. I'm not sure about the other TB chakra though. Seems like there wasn't any left in the VotE fight