I am seeking a solution that will enable me to mirror the screen from Android
(LineageOS 20) to Android TV (LineageOS 20 for Android TV). Chromecast is only
accessible for Google-certified devices; therefore, Chromecast will not function
here. Is there a project in which I can install the receiver app on the Android
TV and the client app on the Android phone to accomplish this?
Not sure on software but you can buy hdmi mirror / splitter hardware on Amazon for like $30 bucks
Unfortunately this won’t work for Pixel devices because google disabled video out.