AF 537 then AF 9420 at Charles de Gaulle
Nouakchott → Paris → Toulouse
Timetable, Paris time
06:10AF 537 from Nouakchott at the gate
12:15AF 9420 to Toulouse leaves the gate
6 h 05 apart on the timetable
Charles de Gaulle’s board gives an arrival time for only about 46% of its flights, so many days show no gate time.
The last days
AF 537 and AF 9420 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.