Complex sentence: Kensington Olympia Station is used for rail connection to Gatwick Airport, passengers need to change trains at Clapham Junction, and the journey takes approximately 50 minutes.
Split into simpler sentences: Kensington Olympia Station is also used as a rail connection to Gatwick Airport. While passengers are required to change trains at Clapham Junction, the trip between KPA and Gatwick takes approximately 50 minutes.