Complex sentence: For the fourth season, Coto was credited as the show runner, upon which he expanded in an interview: What's been publicized, that Rick and Brannon have stepped back and I've moved in, is not exactly true.
Split into simpler sentences: For the fourth season, Coto was credited as the show runner. He explained in an interview that What's been publicized, that Rick and Brannon have stepped back and I've moved in, is not exactly true.