If you have world cup games on YouTubeTV on a laptop while you're working like I do, it's hard to watch two at once (like right now). There's no split screen view on YouTubeTV, so my hack is to filter the home screen by world cup and increase zoom to 300. I could probably fire up two browsers and resize them side by side, too, but this is easier...

@DrewExists YouTube Tv does have a pip feature. I have it going now and it overlays on whatever tab I'm working on, whether online or in word, excel, etc