Board Thread:Naruto Discussions/@comment-29393962-20161111215453/@comment-30323490-20161112153651

Sasuke received Hashi's cells from Kabuto, so at some point in time he would've awakened the rinnegan,just like Madara.Same with Naruto receiving chakra from all the tailed beasts, he would've eventually awaken the Six Paths Senjustsu just like Madara or Obito (who got it imediatly probably because they had more tailed beast chakra). Hagoromo's chakra probably speeded up the process for both, or at least for Sasuke.