Board Thread:Naruto Discussions/@comment-26479810-20171222153110/@comment-734582-20171222185918

Vladosaurus wrote: Don't you think they would've mentioned such thing if it was the case? Why would they? Sasuke clearly demonstrated the ability to do so. Besides, it's hardly the first time they didn't completely explain how something worked. Obito's trick with Kakashi is completely within established abilities, even though it's never explained how it's done. I also don't see the added value of "well Sasuke did exactly what he demonstrated what he could already do, to do what he said he'd do".

Vladosaurus wrote: No, i'm implying the logical thing. The logical thing is that chakra gifts are always temporary and run out. Never has any chakra gift been permanent.

By established logic, naruto didn't have portions of a biju (since he would've been able to communicate instantly) and since he got only some chakra, that chakra would run out.