Early start in Frankfurt, as my flight to London was a 7am departure. I figured if I got to Frankfurt Hbf a little after 5am I’d be fine. It took me a little while longer than expected to get everything together, not helped by a crap night attempting to sleep while my brain kept poking me to make sure I didn’t oversleep and miss the flight, so I got the the station around 5.15am, still a comfortable amount of time in theory. I hadn’t accounted for the happens-more-often-than-expected thing that German trains sometimes do run late. Germans will joke about this, crazy as the concept seems. So I board the…