Complex sentence: He has appeared as a guest pundit on several editions of Sky Sports' Super Sunday programme, mostly appearing on The Last Word suppliment, mostly being used to discuss and pass judgement on refereeing decisions during the game.
Split into simpler sentences: He has appeared as a guest pundit on several editions of Sky Sports' Super Sunday programme, appearing on The Last Word suppliment. Mostly being used to discuss and pass judgement on refereeing decisions during the game.