For your learners to have the best possible experience, they need the ability to easily navigate your content and keep track of where they've got to. (elearningindustry.com)
This document provides critical navigation capabilities, such as the table of contents, that allow users to quickly and easily navigate the content. (idpf.org)
That said, navigating content on your phone (be that iPhone or Android) is often much faster than your TV and the appeal of having the latest apps with wider support for Chromecast Ultra could tip the balance in its favour over your TV. (pocket-lint.com)