The tracks are on different grades, so a flat platform can access Superliner equipment on one side and RTD’s EMUs on the other. Tracks 4 and 5 are for Amtrak, without catenary and raised trackbeds, while tracks 1-3 and 6-8 are electrified for RTD. Right now track 1 is used for the airport service and track 8 for the Westminster trains (A and B lines). Supposedly the G line to Wheat Ridge will open soon, and will use track 7; the signage is already installed. It is a very well-planned design, both the tracks and station building, and hopefully will serve Denver well as the RTD continues to expand the system in the coming years.
The CZ was just the vessel to get the ski train set out to Denver. They are seperate trains. The Winter Park station is on the CZ’s route, but served only by the ski train; the CZ stops in the town of Fraser a few miles west. 5 seems to have lost about 40 minutes at Denver for splitting the train, but that is the only time its schedule will be affected until it’s time to bring the ski train set back east in the spring.