JOss – Yup, that’s right. Difficult to understand if one is nota snooker watcher. Esport 1 and 2 are the main channels easily available of Sky. Eurosport Player is the App which is their equivalent of the Red Button. When main channels two main matches, the Player will do coverage from others. Like the Beeb do with tennis on the Red Button.
Found out that to load it on TV one needs to get Google Play on the telly and pull it from there. However., that only works on Android tellies. Have given up searching. New PC is much better than Samsung at casting to Chromecast. Takes a few seconds to start not 3 or 4 minutes.