Complex sentence: The line was built to replace the original Lackawanna line between these two locations and while it resulted only in a modest savings in travel distance, it did result in a significant savings in travel time between Scranton, PA and Binghamton, NY.
Split into simpler sentences: The line was built to replace the original Lackawanna line between these two locations. While it resulted only in a modest savings in travel distance, the new line cutoff a significant amount of travel time between Scranton, PA and Binghamton, NY.