Board Thread:Theories and Speculation/@comment-25139119-20150807165411/@comment-6769189-20150808010910

Filler is created by the animation studio so manga authors can write the manga. MOST of the time the author doesn't write it. If the author decides he wants it to be canon, he says something. Otherwise what he writes is what he intends the story to be. Sometimes they consult the author, but unless he says a filler is canon, its not canon.

Legendary: Tailed Beast chakra does not regenerate itself. Naruto shared som with Kakashi and he ran and needed some from Naruto again later. Also 6PSM is a Sage mode power up, not a Kurama power up.