Going via Bensenville instead of using the Cragin Sub is a difference of a few hours, typically. Most railroads are looking for transit time reductions on the order of days, which is easily had by reconfiguring terminal operations rather than infrastructure. If they can\'t achieve a 1-2 day reduction in transit time, most railroads will instead focus on achieving CONSISTENCY instead of duration, as most shippers are happy as long as transit times are predictable. Customers don\'t want an average 5-day transit time if sometimes it\'s 3 days and sometimes 9. They\'ll settle for a consistent 6-day transit if it\'s always 6 days.
Then, of course, there\'s the issue of cash to improve the line (insufficient rate of capital return).
CP may also have dreams of filling out Clearing-bound trains with Bensenville blocks that they drop on the way through.