Board Thread:Theories and Speculation/@comment-28464629-20160515105435/@comment-34870248-20180302125441

When Kaguya fought Hagoromo and Hamura, she was the strongest. But both of the brothers possessed one half of her chakra as a whole. When Hagoromo sealed the ten tails into himself and split it to 9 tailed beasts, he basically had the power of both Six paths Yin-Yang release. That's why Indra and Ashura possess one half of his chakra. So it seems that Hagoromo is still somehow weaker than Kaguya, because he did not possess what Hamura did.