How would UP+NS and BNSF+CSX transcontinental systems compare?

How would UP+NS and BNSF+CSX transcontinental systems compare?

CSX, BNSF, and Pan Am Railways power lead a Pan Am Southern unit grain train en route to Ayer, Mass., on Pan Am’s freight main in former B&M territory, at Wendell, Mass., on Aug. 16, 2017. (Scott A. Hartley) Analysts widely expect that BNSF Railway and CSX will seek to merge in the wake of last month’s announcement that rivals Union Pacific and Norfolk Southern would combine in an $85 billion deal to create the first U.S. transcontinental railro…