Carolin said "In crisis the intelligent ones are looking for solutions, idiots are looking for the guilty ones" and says that it might be a Vicco von Bülow aka Loriot quote (which Stefan later corrected that Loriot never said it, as the line is an anonymous Spanish phrase). However the line first connected to Loriot through the German social media in May 2020, while the scene is set in March 2020.
When talking to the optometrist Carolin complaints that many people more believed a random pop-singer about the truth regarding the Corona virus. The singer in question is Xavier Naidoo who first released his Corona related statement in April 2020. The scene however is set in March 2020.
The story is set in Constance. However when Carolin and her son visit the optometrist the Ravensburg pub "Salzstadel" is visible in the background. Ravensburg is over 40km away from Constance on the other side of Lake Constance and is also not a part of the Constance region.