You might see this is an ironic comment, but it is as much that, and as much a technical statement of fact. Sometimes the trains arrive at the correct time ( +/- 10 min) so they correlate to what you are seeing on the screen.
But unless it's a delay of 1 hour or more, neither trains or tracks will be updated on the screens. It's just happen they sometimes coincide, so they might correlate, but only by coincidence. Trains schedule and train reporting on the train station are, I was told..."Run by different companies!"
-> Source: Conversation with platform manager at Amsterdam Central Station a few years ago. ( not that many years...)
