Complex sentence: The review aggregator website Rotten Tomatoes reports an 85% approval rating, while on Metacritic, the first season of "Covert Affairs" received a score of 64 out of 100, based on 23 reviews, indicating "generally favorable reviews".
Split into simpler sentences: The review aggregator website Rotten Tomatoes reports an 85% approval rating. On Metacritic, the first season of "Covert Affairs" received a score of 64 out of 100, based on 23 reviews, indicating "generally favorable reviews".