BA 1391 then CX 8 at Heathrow
Belfast City → London → Paris Charles de Gaulle
Timetable, London time
10:05BA 1391 from Belfast City at the gate
17:17CX 8 to Paris Charles de Gaulle leaves the gate
7 h 12 apart on the timetable
The last days
BA 1391 and CX 8 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.