well sometimes (a lot of the time, actually) a train going from point a to point b relies on a train getting to point a to begin with, and that cancellation of

well sometimes (a lot of the time, actually) a train going from point a to point b relies on a train getting to point a to begin with, and that cancellation of that trip is likely the cause of the cancellation of the trip from a to b. so this makes sense, to me.