On the odd occasion that I stood at the back of the chicken run there was always a steady stream of people visible walking along the Old Shoreham Road from about 85 minutes. Obviously not the same amount of added time in those days
I don’t recall transport being an issue at the Goldstone yet plenty left early there too. Been the same for years at every ground I’ve ever been too. Some people get to a certain point and decide they’ve seen enough. Their choice, though not mine