You can use an iPad/iPhone with cast and then send the screen to a TV via Airplay. Maybe Android does it too with chromecast…
Android does it, on my Samsung Galaxy A7 tablet, turn on Smart View facility, select the device to connect to in my case a Samsung TV and bingo. Anything on the tablet screen is now on the TV, so control app and cast screens can be viewed on the TV at will. Cast looks very nice, app on android is portrait only at the moment so doesn't really use the TV screen well. Everything on the same network of course to get this to work. The chromecast icon is visible on the top line of the tablet when this is working.
