Question about Chromecast with Google TV 4K - 396798

I have also just checked. There is an app called 'Sunrise UPC TV'. But since I don't have Sunrise/UPC, I can't judge how good the app is.

Should work via .apk sideload which is allowed. However, I can't tell you how well it works with Sunrise TV, some apps can have minor bugs like Stadia or like Xbox Game Pass which work but have a smartphone layout of the UI and some don't work at all.

I just checked, apparently there is no Sunrise TV for Android TV (yet). In my opinion, watching TV channels is only possible via the Zattoo app at the moment.