Complex sentence: The final newscast used in the temporary set was on October 20,2011 for "CBS 2 News This MorniMorning" n, on October 20,2011, WCBS-TV debuted a new set on its noon newscast.
Split into simpler sentences: The final newscast used in the temporary set was on October 20,2011 for "CBS 2 News This Morning". Then, on October 20,2011, WCBS-TV debuted a new set on their noon newscast.