AF 9451 then BA 317 at Charles de Gaulle
Nantes → Paris → London Heathrow
Timetable, Paris time
11:20AF 9451 from Nantes at the gate
19:50BA 317 to London Heathrow leaves the gate
8 h 30 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
AF 9451 and BA 317 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.