Thanks for featuring, author here. This is the first version of the #swisstrains webmap which I've made 17yrs ago, it still runs for historical reasons, it used to fetch also live delays but the position of the trains were still interpolated, using the average speed between the two timetable stops.

The other clones are more or less using same technique, swiss transport agencies are not (yet) offering live position of the trains / vehicles, only the actual delays measured at stations.