Not forever, just until BNSF gets their crap together.
Haha, we know how well that went with Sunset East. Once Amtrak loosens its stance, the freight companies are not going to let them tighten up the schedule again.
Not entirely true. A few years ago, the Sunset was moved from it's traditional 10 pm departure time from Los Angeles to a mid afternoon departure (2:40 seems to ring a bell), for exactly the same reasons. It couldn't make it with the UP meltdown and was consistently hours and hours late. UP and Amtrak set that hugely padded schedule and UP kept it on time fairly well with it (not a huge accomplishment. That schedule had like double digit pads).
In any event, when things on UP cleared up, and they had put large swaths of double track on the Sunset Route, Amtrak and UP again agreed on a revised schedule, which put it back close to its traditional schedule with the 10 pm LA departure. And that was UP we are talking about.