Complex sentence: When it first aired, "The Funtastic World of Hanna-Barbera" could be seen on all independent stations owned by Taft Broadcasting, the parent company of Hanna-Barbera Productions and Worldvision Enterprises at the time.
Split into simpler sentences: When it first aired, "The Funtastic World of Hanna-Barbera" could be seen on all independent stations owned by Taft Broadcasting. This was the parent company of Hanna-Barbera and Worldvision at the time.