It's strange how neither of them can sense the supposedly huge chakra of the 10 tails, i wonder if the 10 tails is something completely different from what Obito and we expected, maybe his chakra is very different from what they know of, maybe that type of power is what can destroy the world and create another one. And Naruto also has chakra from all demons (except the 1-tails), so anything can happen in this fight
