The incident I was referring to was not on the 20/20A route but if there was traffic stretching back far enough it could have had an effect on the 20/20A and East Durham services.

Last Saturday I saw a Cadet arrive in Durham displaying NOT IN SERVICE and left straight away. I think dropping runs on the 20/20A should be avoided especially on the sections where it has only the 20 or 20A to Durham / Sunderland. I think a thing they could do is when they start to bunch up is the late running journey could run light for the rest of the journey indicating passengers that another bus is just behind in a bid to make up time. Another way is there is a sizeable gap and resources are available is to send a bus out of Park Lane on-time to time correct the service.

I almost never use the 20 on a Sunday but I do think the Sunday 20 timetable can be a challenge to get from each end of the route in about an hour especially as it also runs via Doxford on Sundays. On Bank Holidays when a Sunday is used it struggled to keep to the timetable when I used it with 2 service 20s arriving and departing Park Lane together. I don't know if it is always like this but the timetable looks tight.