The pizza courier, instead of driving directly to his customer, is driving all around the city of Bonn (over the Kennedy bridge, alongside the Rhine towards Bad Godesberg, back to the central administration building, through the city centre, ahead the Minster, along the Art and Exhibition Hall and then back over Adenauerallee towards the actual destination) and would have delivered a cold pizza.
When Stephan is arguing with Jana about the name of the child over dinner a crew member is reflected in the windows behind Jana for a few seconds.