Board Thread:Boruto Discussions/@comment-1018594-20161222205643/@comment-1751565-20161227224027

Lorenzo VonMT wrote: Do you guys think naruto still has a little bit of all the tailed beasts chakras? Not really. I think he has a dormant amount left in him, enough to communicate mentally with them, if in case of another world crisis dire emergency occurs...but not enough to actually use in a fight.

Its like the same way when he had to get a piece of each Beast's chakra to be able to pull them out of Obito - the same way Gaara could pull out Shukaku as well. Most probably once you have had a Tailed Beast's chakra in you, you have a long lasting link with them even after they are extracted from your body. That would also explain how Killer Bee got 8 Tails back as well as how Perfect Jins can release the full Biju and still remain alive...