Ok...
I was away to avoid spoilers and well, here I am.
Ok, I'll be honest, as much I enjoyed this chapter, the main topic is in fact the ending. I'll say this: no, it's too late for Naruto and Sasuke to get to Naruto because the teleportation is done. I have to recheck multiple times and yes, he is now in that world. The next chapter is the twist/climax of the volume, so expect something drastic for this. The idea of Madara being split in half is to have him all weak from it and he can do so little to fight back incredible. It's appropriated that Sasuke would do the cutting since Naruto isn't that merciless like him. So right now, the main question is what's next. Well, this is something else, isn't it. Again, the next chapter is the climax/twist, so whatever happens there will set the course for the rest of the battle/scenario. Last volume was on Obito turning face in front of Madara. Here, well, we'll see.
The setup is crazy and I don't know what to think of it. Again, Madara got cut in half and pretty much can't do much but throwing stuff. So that said it's highly possible to see the final confrontation between Madara and Obito, and pretty much end it all. If Madara does get the other eye, expect the last two chapters of the volume to be well chaotic. It could be table turn moment with that eye. Again, won't know until the next chapter. It's possible that the Kamui will be locked forever with Obito doing the final sendoff for Sakura and Obito will sleep forever in his own world. Cruel irony. Here's hoping for good closure for Obito.
What do I think will happen? No clue really. I mean I can think of one, but there's just so many, that I should keep my mouth shut anyway.