A reference in a previous post indicated NY-series trains to the B&M @ RJ. This may have been true at some point in prosporus times past. In the late 60's and early 70's one train daily , BY-4, operated Dewitt to Mechanisville. This was usually a moderate sized train operated to "Mickeyville" with a Mohawk crew ,qualified on the D&H and B&M, with three four axle units. It was always my understanding from older staff officers on the division this was the last of what once was three trains daily. Freight from NY-4, NY-6, & NY-8 was taken at DeWitt for that days BY-4. This gave thru service to the B&M for freight from Englewood (NY-4) St Louis (NY-6) & Blue Island (NY-8) to B&M points. Other trains from the west made drops, or terminated at DeWitt, with freight for the B&M but these three NY-series trains are how that freight made it to New England without using the B&A.
Rotterdam Jct. was a viable gateway to the east but I'm certain every Traffic Official on the system atempted to solicate traffic to that region thru Worcester or Beacon Park. Every car of freight delivered at RJ resulting in the NYC short-hauling itself and lost revenues.