I recently bought a TCL TV Series 6 with the Google TV option. I am trying to connect to it as a wireless display, but the TV doesn't show up on the options to connect to wirelessly.
I know that you can cast tabs in Chrome, but I have found that to be buggy. With Google TV can you connect as a wireless display? I've done it before, but only with a Roku TV
Google TV (basically Android TV) devices don't support Miracast. Some manufacturers add it to their certain products.
Are you trying to connect to it from a PC? In Chrome, not only you can cast tabs or the webpage, you can cast the whole display (using Chromecast) . Same in Microsoft Edge
If you're trying to connect from an Android phone, that's app specific (also Chromecast). For example, when your phone & TV both are connected to the same WiFi network, a "cast" icon appears on top right corner when you go to YouTube (and any Chromecast supported apps) on your phone.
Chromecast doesn't support miracast if that's what you're asking.