Sentence 1: He said that the ordinary Americans believed that there was an American conspiracy to attack EgyptAir 990 and that the Cairenes were covering up the fact .
Sentence 2: He said that the ordinary Americans believed there was an American conspiracy to attack EgyptAir 990 , and that the Cairenes covered up the fact .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?