Still, if you have one of Google's streaming devices, or a smart TV with built-in Cast support, you can cast apps and Chrome web pages from your phone to the big screen with a few taps.
There should be an option labeled Screen cast. If you can't find it, use the Smart View ... If you exit the app on the phone while you're casting, it should remain playing on your TV.
Android TV: An app-centric smart TV platform powered by Google's Android software and available across smart TVs, set-top boxes, and more. Google TV: A curated and personalized smart TV interface ...