(Hope I'm understanding your question correctly. I'm not from Switzerland, but used their train system for a week a month ago.)
They have an excellent web site and app, first up. It allows you to set departure and destination, earliest departure time (if you don't want to leave before 10am, say) or latest arrival time (i.e., so you can make a flight), tweak routing and see every detail to the minute. You can get print-outs (if required) telling you what to do and when. The platforms for arrivals and departures are set rather than vague as in many other countries so you know exactly what's happening in advance.
I'm confident that they've worked nation-wide to coordinate arrivals and departures to ease passage for the absolute majority of people. Each train change is aware of the distance between platforms so that it might allow two minutes to cross platform to another train, or seven minutes if you need to move a bit further. You don't get stuck waiting for 30 minutes or have two minutes to cross six platforms. (We were travelling with an infant and a lot of luggage that meant changing trains was traumatic - in Switzerland, it was a dream.)
In one very handy sequence, we caught a series of two gondolas down a mountain, switched to a bus, then a train, then another train. Waiting time was barely there - it was brilliant. Trains seemed to leave shortly after you got to them, like the world was designed around you. People were joining or leaving on other routes too and seemed to have a similar experience.
I got the impression that popular routes were optimised to minimise walking distance between platforms, but could've been imagining that.
Another handy thing was that every platform access had stairs in one direction and a ramp in the other. The underground systems in London, Paris, etc were no where near as handy for people with luggage or prams, often not even having lifts for disabled access.
From what I've heard of Switzerland, the real key is the trains being exactly on time. Once you can guarantee that, it's easy to set a connection at exactly 4 minutes or something. OTOH, if your train arrival time is +/- 3 minutes, your connections are going to be too tight or excessive most of the time.
They have an excellent web site and app, first up. It allows you to set departure and destination, earliest departure time (if you don't want to leave before 10am, say) or latest arrival time (i.e., so you can make a flight), tweak routing and see every detail to the minute. You can get print-outs (if required) telling you what to do and when. The platforms for arrivals and departures are set rather than vague as in many other countries so you know exactly what's happening in advance.
I'm confident that they've worked nation-wide to coordinate arrivals and departures to ease passage for the absolute majority of people. Each train change is aware of the distance between platforms so that it might allow two minutes to cross platform to another train, or seven minutes if you need to move a bit further. You don't get stuck waiting for 30 minutes or have two minutes to cross six platforms. (We were travelling with an infant and a lot of luggage that meant changing trains was traumatic - in Switzerland, it was a dream.)
In one very handy sequence, we caught a series of two gondolas down a mountain, switched to a bus, then a train, then another train. Waiting time was barely there - it was brilliant. Trains seemed to leave shortly after you got to them, like the world was designed around you. People were joining or leaving on other routes too and seemed to have a similar experience.
I got the impression that popular routes were optimised to minimise walking distance between platforms, but could've been imagining that.
Another handy thing was that every platform access had stairs in one direction and a ramp in the other. The underground systems in London, Paris, etc were no where near as handy for people with luggage or prams, often not even having lifts for disabled access.