BJ 730 then AF 6734 at Charles de Gaulle
Tunis → Paris → Chicago
Timetable, Paris time
17:20BJ 730 from Tunis at the gate
22:01AF 6734 to Chicago leaves the gate
4 h 41 apart on the timetable
Charles de Gaulle’s board gives an arrival time for only about 51% of its flights, so many days show no gate time.
The last days
BJ 730 and AF 6734 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.