Board Thread:Theories and Speculation/@comment-33485854-20180625233306/@comment-30323490-20180630193548

Kabuto literally stated that he is helping Sasuke by giving him Hashirama’s cells.It does matter how much cells he gave him. Madara in his life time obtained a small piece of Hashirama, and awakened the rinnegan years and yeard later, and also didn’t have proven wood release during his life time.He obtained wood release when Kabuto amped him eith the Hashiboob.

I speculate, repeat speculate, that Hagoromo speed up the awakening process for Sasuke. And same for Naruto, since he had small pieces of the 8 bijuu.