Am I right in hearing that the Arriva real time app actually works on journey numbers and does not look at the full running boards. So if a service is operating late, lets say going into Newcastle as a X4, and the bus is leaving Newcastle as an X5, and the bus is running late, because the driver has not keyed in the journey details of the X5 trip, the real time system thinks it is on time?

If running boards are used, the system knows what journey the bus is going onto and in this case, lets people at the Haymarket know it is running late.

If this is the case, it does seem a bit short sighted.