User blog comment:Omega natsu2/Chapter 372: Breach, Predictions./@comment-33019320-20140219094024/@comment-7418318-20140219104530

The other Shinobi were encased in Naruto's and the Kyuubi's chakra and most likely sustained by that.

But I see your point. It means that Kishimoto has contradicted the rules he set up when Jiraiya taught Naruto the technique much earlier than just this chapter :P