Complex sentence: The station serves the Virginia Railway Express Manassas Line, and shares the right-of-way with Amtrak's "Cardinal" and "Crescent" trains, however, no Amtrak trains stop here.
Split into simpler sentences: The station serves the Virginia Railway Express Manassas Line. VRE shares the right-of-way with Amtrak's "Cardinal" and "Crescent" trains, which do not stop here.