Well we always look for the train that leaves somewhere in the middle of the fourth quarter
I'm not sure I understand? You give up an evening to go and watch a sporting event and don't even stay until the end? I can just about understand why footie fans go early when their team's being given a good drubbing, but if you're there to see the spectacle and are a neutral, surely the final whistle and post-match celebrations are the best bit? Mind you, NFL is very stop-start as you say. Silly game if you ask me.
Anyway, although there are crowd control measures, when I left the Muse gig right in the massive throngs of everybody leaving, most were heading down towards Wembley Park and so there were no problems at all heading the other way to the Chiltern station, just some barriers to weave in and out of.