AF 9451 then AF 6734 at Charles de Gaulle
Nantes → Paris → Chicago
Timetable, Paris time
11:20AF 9451 from Nantes at the gate
02:06AF 6734 to Chicago leaves the gate
14 h 46 apart on the timetable, overnight
AF 6734 leaves 14 h 46 after AF 9451 arrives on the timetable: more than half a day, so not a connection we count.