If only launching an app automatically turned on the tv as well, or they had continued conversation worked since app launching is only effect once the sets are onUpdate: In order to link your TV with Google Assistant, you have to go to Extras under the SmartCast input, select Google Assistant and proceed to follow instructions. See attached image. Once this was done, I successfully added it and can control it. Will need to try a variety of command to see what works and what doesn't but I can now say "Start Plex on Living Room TV" Woohoo!
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