While it still sucks, I think that once any train gets held up like that out of the gate, it seems to miss it's "slot" the rest of the way in crowded corridors. I'm not taking up for UP, CSX or BNSF (all of whom have held trains of mine for 'highball' empty grain trains) but the reality seems to be that it gets pretty tough after that. Granted, all such info is annecdotal, it just seems more likely that a "body in motion remains in motion" and a train that is slow about it, well, doesn't.
Does anyone know how the incentives work for the freight roads for OTP, specifically after a train is already delayed or not delayed on their "watch"? Pure speculation, but I wonder if once Amtrak has caused a delay, the freight road is no longer on the hook for OTP. Thus, they have justification (in their eyes) to clear their lines before they are seriously interested in moving the poor Eagle, Cardinal, Capitol, etc. Memories of sitting aboard a 6 hour late Empire Builder, in the hole waiting for eastbound coal drags in North Dakota comes to mind.