Sadly, Duncan, two unconnected fly-overs don't equate to an op. Equally sad is that the days of standing in any area of reasonably open aispace would have rewarded the casual observer with plenty of sightings. I'm only guessing, but probably just coincidence. Sure, they could have been linked, but it's not much. People used to ask questions when they saw more than ten aircraft in the same space at the same time. So sad.