Board Thread:Versus Debates/@comment-43403813-20190805194702/@comment-43403813-20190808144534

@AsianReaper It may be irrelevant to your point, but that wasn’t its purpose, as you said, I wanted to reference it.

Also, Hagoromo needed help because they were reverse-summoning Team 7 from one of Kaguya’s dimensions, which is a massively stronger space-time jutsu than Obito’s, so perhaps Nagato would not find any difficulty in reverse-summoning from Kamui. Also, Hagoromo was weak because he was an essence of himself rather than his alive stronger presence. Additionally, what FlatZone said about Hagoromo bestowing chakra to Naruto and Sasuke has a big role in this as well.