CX 237 then BA 632 at Heathrow
Hong Kong → London → Athens
Timetable, London time
07:00CX 237 from Hong Kong at the gate
10:05BA 632 to Athens leaves the gate
3 h 05 apart on the timetable
The last days
CX 237 and BA 632 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.