Complex sentence: Knight and his former "Brady Bunch" co-star Barry Williams appeared in a 2006 episode of "That' 70s Show", in which he and Williams portrayed a gay couple who moved in next door.
Split into simpler sentences: Knight and his former "Brady Bunch" co-star Barry Williams appeared in a 2006 episode of "That' 70s Show". He and Williams portrayed a gay couple who moved in next door.