This is a speculation on my part. As Kishimoto is wont / used to doing in which he jumps an aspect and comes back to reveal it much later. Could Sasuke have already met with Yamato on his way out of the Hideout?
If that happened, I have theories as to what Sasuke could have done.
1.) Killed Yamato - Sasuke was in a killer mood then; he killed white zetsu for fun.
2.) Freed Yamato - no explanation.
3.) Used Genjutsu on Yamato - to obtain information he would need later.
4.) Got Senju Cells from Yamato - he had read the Naka Shrine Tablet already, so I won't be surprised if Sasuke already has Senju cells. In such a case, I would expect Sasuke's next upgrade to be to Rinnengan especially when death knocks close to his door as it did when Madara got the Rinnengan.
What do you folks say?
If that happened, I have theories as to what Sasuke could have done.
1.) Killed Yamato - Sasuke was in a killer mood then; he killed white zetsu for fun.
2.) Freed Yamato - no explanation.
3.) Used Genjutsu on Yamato - to obtain information he would need later.
4.) Got Senju Cells from Yamato - he had read the Naka Shrine Tablet already, so I won't be surprised if Sasuke already has Senju cells. In such a case, I would expect Sasuke's next upgrade to be to Rinnengan especially when death knocks close to his door as it did when Madara got the Rinnengan.
What do you folks say?