Upvote:2
That depends a lot on the specific train operator. Chances are, that if they have enough technology to issue an electronic ticket, they have enough technology to verify & track delays.
In Germany, for example, this is completely automatic. They track your itinerary life and if you are going to miss a connection, they will sent you a notification and alternative options up front so you can decide what to do. The app with your ticket will update status life and give you an estimate whether you will make your next connection or not.