I’ll bite. How about the New Haven? Their main line is now part of the Northeast Corridor. They had through sleeping car trains in conjunction with the PRR down to Washington, and with the B&M, CV, and CN to Montreal.
Amtrak has their high speed trains on the route. You pay a few bucks more for “business class”, such as it is. The old trains drawn by a set of Alco PA1s might not have been as fast, but far outpaced Amtrak in panache. The important trains had parlor cars, the lounge cars had a real bartender, who could mix up whatever the passenger wished. With Amtrak, you’re lucky if they might have some vodka, and maybe some tomato juice to make a half assed Bloody Mary.
After throwing back a few highballs, it was time to eat. Amtrak can’t make up it’s mind about food. I think even the long distance dining cars have about three dishes which they’ll microwave for the customer. New Haven prided itself on its food. Since the route followed the shore, they specialized in seafood. Everything was done with class. There was a high class clientele, and they wanted the best. Serving two of the largest cities in the US really demanded superb service.