After the meeting with the German ambassador Lena calls the Ritz hotel to contact the pilot of the Lufthansa crew she was member. But on the seventies there was no Ritz hotel in Santiago. The first one was opened in Las Condes neighborhood, far away from downtown in 2002.
The German ambassador's Mercedes that takes the protagonists to the airport, is flying two German flags. In reality only one would be affixed to the car (on the side where the Ambassador or Charge d'Affaires is seated, behind the driver, not on the driver's side).
Lena and Daniel sit down on auxiliary seats facing the rear of the plane. They don't fasten their seat belts. However after take-off, when the plane goes to a steep climb, they sit comfortably on their seats when they actually should fall off due to the ascent.