Well this chapter made me feel stupid. According to Yamamoto, the reason Bach hasn't stolen Yamamoto's bankai is because he can't steal something that he doesn't know the limits of. Makes sense. And that's true when it concerns Ichigo's powers. Still, I cannot accept this ending. Bach is not as strong as I thought, and Yamamoto's final blow wasn't that impressive. But raising Bach's dead comrades was pretty impressive. The next chapter might just focus on Bach's past or this lieutenant of his will somehow turn things around and surprise us with something good.
I really hope it's that second one, because I sure as hell know that this war isn't over.