Board Thread:Theories and Speculation/@comment-27075290-20160214063402/@comment-734582-20160310124004

After defeating Kurama, Naruto separated Kurama's essence and chakra. Using that stored chakra, he blocks off his own reserves and uses Kurama's exclusively. That's Kurama Chakra Mode.

After Kurama willingly decided to help, they no longer make that distinction. Naruto can draw on his own and Kurama's chakra at the same time. There's no need for complicated names or forms or modes: prior to Kurama's help there was Kurama chakra mode, everything after that from his Cloak to his Six Paths Sage Mode uses Kurama's chakra and his own together.