What a disappointing chapter. I'm starting to think we may never know what happened between SS. It just is. And this weird, formal behavior between them now is all that we'll get.
It's like Kushina married Fugaku Uchiha.
And notice we never see Naruto looking on or being accepting of it in any way. At least at the end of the Pain arc there was Hinata looking on. But not here. Naruto just disappears into the background. It's a cheap way around having to deal with the resolution of the character's stories.
I don't think any character is going to get a truly happy ending. I think Sasuke will go back into the world without a backwards glance at his family, and Sakura and a now-accepting Sarada will accompany Naruto back to the village, where Bolt and Hinata and Himalaya will be waiting.
What an interesting observation about Kushina and Fugaku. One that, I suspect, is pretty darn accurate.
I think it's pretty aggravating, personally, that Naruto is such a background player. Kishi's Uchiha preference is coming through loud and clear.