Is it absolutely certain they flew into Edinburgh?
Just last leg, teams:
- got from Grindelwald to Interlaken
- took a train from Interlaken to Basel
- flew from Basel to Dresden
- drove from Dresden to Berlin
when they could've just as easily:
- took a train from Interlaken to Basel
- fly from Basel to Berlin
- get directed to a clue outside Berlin with cars attached OR
- took a set of trains from Interlaken to Berlin (Interlaken - Zurich - Frankfurt - Berlin) or something?
- get directed to a clue outside Berlin with cars
The point is, TPTB like to add 'time-wasters' in an effort to get ahead of the teams, and they've done it more and more in recent seasons - the ferry to Mallorca when it has an airport last season, the train from Barcelona to the Loire Valley when they could've driven from Paris last season, the train to Austria in TAR 20, the train to Amsterdam in TAR 19 just to fly to Panama (when Brussels has an international airport), and so on. What's to say the teams weren't directed to fly to Glasgow or Aberdeen, and then take a train ride to Edinburgh?
Regardless of the how:
I think it's safe to say they're bunched somewhere.