BA 1367 then BA 1338 at Heathrow
Manchester → London → Newcastle
Timetable, London time
13:25BA 1367 from Manchester at the gate
16:05BA 1338 to Newcastle leaves the gate
2 h 40 apart on the timetable
The last days
BA 1367 and BA 1338 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.