Complex sentence: Construction commenced on the Island Line's western extension to Kennedy Town in 2009 and on 28 December 2014, the extension opened to passenger services, providing direct heavy rail connection to the western district of Hong Kong Island for the first time.
Split into simpler sentences: Construction commenced on the Island Line's western extension to Kennedy Town in 2009. The extension would also provide direct heavy rail connection to the western district of Hong Kong Island for the first time.