Board Thread:Theories and Speculation/@comment-34661853-20181111160651/@comment-32685487-20190109052204

The only time Naruto could sense him was in SPSM. He can't do it outside of that form. The form uses SPChakra and Senjutsu. I do think Hagoromo's chakra changed theirs a bit to be linked, but I don't believe they have his at all anymore. They are eternally connected through being reincarnates with Six Paths chakra, who's SP Chakra was altered some by Hagoromo. They can sense each other, but Naruto can only sense him while in SPSM, not while in base form so its not that they still have Hagoromo himselves chakra, because they don't.