Original sentence: The TCC also took part in several through-routes (interlined pool operations) – that is, the use of through-coaches on through-routes running through the territories of two or more operating companies – in cooperation with the Atlantic GL, the Dixie GL, and the Southeastern GL – including those between Birmingham (in Alabama) and Bristol and between Memphis (in Tennessee) and Washington (in DC, the District of Columbia).The Tennessee Coach Company and the other carrier – first the UTC, later the CCC, even later the Southeastern GL – shared their joint certificate (between Nashville and Knoxville) in an unusual way:  One carrier ran in one direction on any given scheduled trip, then the other carrier ran in that direction on that same sked the next day, and vice versa.[The TCC also started one daily trip each way between Nashville and Knoxville along US-70N via Lebanon, Carthage, Cookeville, and Crossville, joining the Continental Tennessee Lines, based in Nashville, another Trailways member company, on that parallel alternate route
Edited sentence: The TCC also started one daily trip each way between Nashville and Knoxville along US-70N via Lebanon, Carthage, Cookeville, and Crossville, joining the Continental Tennessee Lines, based in Nashville, another Trailways member company, on that parallel alternate route.The TCC also took part in several through-routes  also called "interlined pool operations" – that is, the use of through-coaches on through-routes running through the territories of two or more operating companies.The Tennessee Coach Company and the other carrier – first the UTC, later the CCC, even later the Southeastern GL – shared their joint certificate for the route between Nashville and Knoxville in an unusual way:  One carrier ran in one direction on any given scheduled trip, then the other carrier ran in that direction on that same sked the next day, and vice versa.The routes were operated in cooperation with the Atlantic GL, the Dixie GL, and the Southeastern GL – including those between Birmingham, Alabama and Bristol and between Memphis (in Tennessee) and Washington, DC