The NAV document is a required element for EPUB3. You can't just remove it. 1) the tools you're using won't let you, and 2) your EPUB3 wouldn't pass validation if they did.
Hiding is your only option. You may want to brush up on EPUB requirements. There's nothing wrong with combining the NAV with an HTML toc, but if you were truly given an EPUB3 that contained no NAV whatsoever, then you paid for a broken EPUB.
Last edited by DiapDealer; 10-18-2022 at 08:59 PM.
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