I didn't say that they were disinterested...but CT's obstruction has at least been rather a pain with respect to travel times on the NEC-North. I also think it's fair to say that getting those extra 10-20 MPH would still count for something.I wonder what the traffic potential is between Boston and Montreal. At present there a 7 Canadair CRJ non-stop flights a day and about 14 other CRJ/ERJ based one stop connections. Even if all those traveling O/D BOS - YUL using those were to transfer to trains that would just fill a longish train maybe, depending on how many are O/D BOS - YUL and how many are connectors. I cannot see how one could justify spending mucho dinero rebuilding tracks on a partially abandoned RoW for this. So the most likely thing to happen will be along existing usable trackage, which indicate a routing via Palmer or Springfield. My guess is that it might be [referred to be via Palmer becuase of the Amherst routing, and there could indeed be even a Vermont terminator from Boston before anything happens to Montreal.
As for interest in rail, CT can hardly be categorized as a state uninterested in rail or opposed to rail. If anything it has actually bought more equipment in the recent past than Amtrak has. CT does aggressively protect what it perceives to be its primary interest, which is efficient, on time and reliable transport to New York, and one can't blame them for it. This unfortunately sometimes runs afoul of the desire to run the Amtrak trains a little faster on that railroad. Incidentally, many in NJ wish that NJT were as good as MNRR at protecting its interest on the NEC. And no matter what CT allows or not, and no matter how much railfans might dream, the cowpath of a railroad that MNRR is, will never support anything significantly faster than at most 90 mph in short spells between New Rochelle and New Haven. Restoration of the fourth track at the eastern end will of course help reduce congestion and increase schedule reliability for both MNRRR and Amtrak, and that is funded and in the works.
Also, one of Amtrak's PRIIA report on the NEC says that they can get 90-110 MAS between New Rochelle and NHV. Obviously, they won't be able to manage this on the whole line (you can never manage that), but it would still be an improvement.