It seems they solved a lot of the "glitches" with the old(er) trains with this iteration. One thing that jumps out is that, while I don't know what the exact dates are, this lines up with Amtrak's equipment pullback from last winter. Simply whacking a coach off the Zephyr or Starlight would go a long way towards covering this train.
As to the Zephyr covering longer-term pax, the issue there is more that Amtrak is frequently stuck doing capacity controls on this part of the route (as well as the Reno run). Note that the CZ PIP was run after the Ski Train was cut, and it noted this as a significant issue. Amtrak needs this train to bleed off demand.
As to the Zephyr covering longer-term pax, the issue there is more that Amtrak is frequently stuck doing capacity controls on this part of the route (as well as the Reno run). Note that the CZ PIP was run after the Ski Train was cut, and it noted this as a significant issue. Amtrak needs this train to bleed off demand.