I'm not sure where you've been, but this dates to before the Conrail split, to roughly 1995 or 1996. Even before that, they eliminated ALCG/CGAL in favor of two pair of locals that each turned at Coxton.
Reading & Northern owns from Mehopany down to I forget just where (Coxton), part of it is split up so NS has one track and R&N the other, but only one track is in service with both using it. For a while the tunnel at Mehoopany was closed entirely due to a collapse.
NS since has leased the LV main from Athens to Mehoopany to the Lehigh Railway, which is affiliated with the Owego & Hartford, Luzerne & Susquehanna, and one of the principals is also involved with a shortline in the south.
CP Rail still excercises it's trackage rights below Dupont, so the line does see some through traffic, including stack trains.
It's possible since both the Lehigh Railway and R&N work at Mehoopany there is some interchange of cars there, and the R&N bought out the Towanda-Monroeton Shipper's Lifeline in a failed attempt to also get rights up to Sayre, so the Lehigh would handle occasional moves between Towanda and Mehoopany for them.