Complex sentence: Game-day service to the Meadowlands Sports Complex links the Metro-North to Penn Station (by bypassing Grand Central via the Northeast Corridor) which began in September 2009, allowing the full trip, albeit with a great deal of planning ahead of time.
Split into simpler sentences: Game-day service to the Meadowlands Sports Complex links Metro-North to Penn Station (bypassing Grand Central via the Northeast Corridor). It began in September 2009, allowing the full trip, albeit with a great deal of planning ahead of time.