That's what I thought ....but was proven wrong.
Zug to airport on a Sunday, no direct train.
So had to change at Zurich HB. Both trains had steps from platform to carriage , so I had to let wife get on train and then lift up two large cases and a small one to her. Then on return trip from airport via Zurich HB again on a Sunday. It was a train going to Italy and stopping at ZuG. No room for cases on the train that had compartment type carriages with a narrow corridor. Then the rush to get the luggage down to the platform when it stopped at Zug for 3 minutes.

Nope never again lol