Complex sentence: Intended as a one-time appearance, the pair became a recurring role starting in the 1945-46 season, and in November 1947, Benaderet and Berner momentarily took over the actual NBC switchboards in Hollywood for publicity photos.
Split into simpler sentences: Intended as a one-time appearance, the pair became a recurring role starting in the 1945-46 season. In November 1947, Benaderet and Berner momentarily took over the actual NBC switchboards in Hollywood for publicity photos.