Speaking from the OPO outside of London perspective, you soon knew the few drivers who would leave you to struggle while they had an easy time crawling around just far enough back to avoid catching you. Mainly though a late runner would be helped out by skip stopping or being allowed to transfer passengers to go direct to the terminus.
All seems to have stopped these days for fear of not being able to prove that the timetabled journeys were operated and so you end up with daft situations e.g. hourly route with two buses running 10 minutes apart (one on time, one 70 minutes late)
or a bus running hours late on a country route when any intending passengers have long since given up waiting!
I remember a few Y types that had air wipers operated by a single control converted to independent electric wipers each with their own switch - not the engineering departments finest hour as they invariably smashed themselves together and then to pieces due to the lack of any synchronisation

Mind you some air wipers did that anyway if they were poorly adjusted...