I used to live in Buffalo and recall the following from seeing NKP trains come in about 1030-11PM in the late 50's to be transferred to the DL&W for New Jersey.
1. The NKP cars were connected together by chains. Apparently in case of a broken knuckle coupler. Don't know of any other RR that did that.
2 Because the Buffalo DL&W Terminal was a stub, a crew would go through the coaches and turn the seats around. Bet the passengers appreciated that.
Interesting to see, one time, an NKP Business car come in on the end of the NKP and be set up to run backwards on the DL&W.
Oh, to see that site again. Regards, Jerry