So clunky and tediculoualy convoluted to set things up, as well as having to plug into the whole Google mainframe to make things simpler, and then they are still unfortunately complicated. I've finally gave in and allowed Google app to operate with assistant in the hope I can Chromecast 4od. It is still not clear how I do this. If I click on video, nothing happens when I click on 4od, even though it says I've linked it. There's something telling me to ask my assistant to do it. I have no idea.