Board Thread:Theories and Speculation/@comment-34661853-20181111160651/@comment-34661853-20190109131659

Naruto gained Hagoromo's chakra and so could enter Rikudou Sennin Mode, but Naruto never had DNA / Cells of some reincarnation of Indra and so can't naturally produce the Hagoromo's chakra, then the Hagoromo's chakra that Naruto was over and he can no longer enter Rikudou Sennin Mode. But Sasuke still has Hagoromo's chakra, not what he gained from Hagoromo himself, but the Hagoromo's chakra that he himself produces, because Sasuke has DNA / Cells from the reincarnation of Indra and Ashura, and so he can reproduce the power of Hagoromo, Rinnegan, and Naruto didn't. Sasuke sensed Naruto because he still has the six-path chakra.