Detective Superintendent Zangel portrays himself as old counterpart of crime boss (godfather of Munich) Schmidinger, battling him successfully decades ago, so that Schmidinger finally left for USA. Officers Neuhauser and Flierl scan old clippings which reveal that this was not really the case.
On clipping can be seen a date in 1977. As plot plays in contemporary Munich, say 2015/2020 (consider modern equipment like smartphones), such a distant past seems very incredible. Actual DSI Zangel is in his mid-fifties - being only 10 or so in 1977, in every case a minor. Schmidinger would have counted only 20 then. Ages, hardly believable for a crime boss, let alone a leading detective.