[amo]

Okay, I don't know if I can explain this properly. I've got a couple of sideloaded books (right from this site), which are very large files. One's a Bible, the other Trollope's "Barsetshire" Omnibus. They're both weighing in at several thousand pages.

My problem is that the TOC only has one level, no sub-divisions. I.e. in the Bible, every Bible chapter is a Kobo chapter- so the TOC is 115 pages long. To get to, say, Book of Matthew Chapter 1, I have to tab through to page 73 in the TOC, every time.
In the Barsetshire Chronicles, there's the opposite problem: each of the seven books in the Omnibus is one chapter, and that's it. So "Barchester Towers" is one chapter, 700-some pages long; no sub-chapters to the book.

When I look at these books in ADE, I can chapter jump- i.e. in the Bible, go to "New Testament", then to "Book of Matthew", then "Chapter 4"; in "Barsetshire", click on "Barchester Towers" and then one of the Chapters.

Now, my questions:
-are other epub readers (like the Sony or something) capable of dealing with sub-chapters in the TOC? I.e. is this a kobo-specific issue, or is it inherent to epub files?
-is there a way around this in my kobo as it currently is?
-is it likely this'll be fixed in a future firmware update, e.g. via a "go to" function?

Any insight would be appreciated.