Complex sentence: Eight trips were scheduled for its first day in service, the first being the 08:36am service from Flinders Street to Box Hill, followed by the 09:08am service back to Flinders Street, on which the train suffered the first of its many failures.
Split into simpler sentences: Eight trips were scheduled for its first day in service, the first being the 0836 down Box Hill from Flinders Street. This run was followed by the 0908 up Flinders Street from Box Hill, on which the train suffered the first of its many failures.