Complex sentence: Carnie & Wendy Wilson continued to record together, releasing the Christmas album "Hey Santa!" in 1993, and they joined with their father for a critically successful (yet commercially unsuccessful) 1997 album, "The Wilsons".
Split into simpler sentences: Carnie & Wendy Wilson continued to record together, releasing the Christmas album "Hey Santa!" in 1993. They joined with their father for a critically successful (yet commercially unsuccessful) 1997 album, "The Wilsons".