Complex sentence: During the 1954-55 season, the show changed its name to the "Colgate Variety Hour" to reflect a move away from pure comedy, however, ratings continued to slide while "The Ed Sullivan Show" got stronger.
Split into simpler sentences: During the 1954-55 season, the show changed its name to the "Colgate Variety Hour" to reflect a move away from pure comedy. However, ratings continued to slide while "The Ed Sullivan Show" got stronger.