Board Thread:Theories and Speculation/@comment-27260817-20160203170532/@comment-4646462-20160205145256

Though it may be just for looks, the Majestic Armor: Susanoo form in the latter half of the Boruto movie strongly resembles Sasuke's Tailed Beast Susanoo form, so Naruto may have some tailed beast chakra in there. In fact, even if he doesn't, he still retains the bond between them in case he needs to call them up for some chakra or assistance. Either way, it seems that Naruto is so powerful with Kurama alone that he doesn't need to.

Also, Tailed Beast chakra alone isn't enough to use Six Paths Sage Mode. Either (some of) Hagoromo's chakra or the Demonic Statue's power is needed to complete the puzzle. It's a shame though, as in that case Obito could have had the foresight to give Naruto that arm that Kakashi severed...