Discuss the structure of the novel so far. Why has the author made the chapters and chronology in the way that he has?

I find it interesting how the author separates the chapters like he does in the book. I personally find it more easier to read than reading a regular book. But I can't tell if these events that the author discribes are happening in the same time to both characters, I guess I'll have to read harder. But so far a very interesting book.