As for The Mapp... I suspect it'll never get a US publication. It seemed to frighten US publishers. They don't seem to understand it.
That seems to point up a significant difference between Europeans and Americans:
A European says: I can't understand this, what's wrong with me? An American says: I can't understand this, what's wrong with him?
I make no suggestion that one side or the other is right, but observation over many years leads me to believe it is true.

Life doesn't happen in chapters — at least, not regular ones. Nor do movies. Homer didn't write in chapters. I can see what their purpose is in children's books ("I'll read to the end of the chapter, and then you must go to sleep") but I'm blessed if I know what function they serve in books for adults.