Keep in mind that a train in Germany counts as one-time if it is less than 6 minutes late. In Switzerland, it's 3 minutes.

Also in Germany, a train that did not even arrive does not count as too late.

There is also a concept of the "Pofalla-Wende", which is when a train is so late that it just does a 180 and drives back, to mitigate that the delay doesn't carry over to the train's next route. Of course, that means that it skips the stations at the end of the route.