Do all ToCs have to match exactly?

Somewhere I seem to have read or otherwise gotten the idea that if you have an HTML ToC, an NCX ToC and a NAV ToC (if epub3itizing), that they should all match up.

But I feel like the HTML ToC is generally redundant in ebook fiction and I usually leave it out.

But now I'm doing a book where the ToC and LoI are both illustrated, so I can't leave it out. What I want to know is if I restrict the HTML ToC to *just* what is present in the print book, i.e. chapters only, will that cause any problems?

The NCX and NAV would be full ToC with links for everything, cover, half title (yep, also illustrated, gotta include it), copyright, author and artist info pages, bibliography, etc.




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