AF 1780 then AA 9600 at Heathrow
Paris Charles de Gaulle → London → Chicago
Timetable, London time
13:45AF 1780 from Paris Charles de Gaulle at the gate
13:00AA 9600 to Chicago leaves the gate
23 h 15 apart on the timetable, overnight
AA 9600 leaves 23 h 15 after AF 1780 arrives on the timetable: more than half a day, so not a connection we count.