A3 261 then BA 635 at Athens
Limnos → Athens → London Heathrow
Timetable, Athens time
12:35A3 261 from Limnos at the gate
16:45BA 635 to London Heathrow leaves the gate
4 h 10 apart on the timetable
The last days
A3 261 and BA 635 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.