If I set up Premiership Rugby on Series Link on TNT1 for example - if another Premiership game is then on TNT2 or TNT3 do I have to set up separately to record? If so, Why as all listed as Premiership Rugby. Proving frustrating as missed important game!
Unfortunately that is down to how BT/TNT Sport assign series CRIDs so yes you need to set a series record for each channel.
However all is not lost as you can use the Discovery+ app to watch these games on catch up. And several of the games are on the EE TV app as extended highlights (45 minutes per game with no ads to worry about).