Complex sentence: The cliffhanger after their breakup in the two-part season finale "I'll Be Seeing You" was intented so that "(t) he audience will have all summer to wonder whether Sam will ever see Diane again," said Les.
Split into simpler sentences: The cliffhanger after breakup in the two-part season finale "I'll Be Seeing You" was intended. Therefore, "The audience will have all summer to wonder whether Sam will ever see Diane again," said Les.