EI 483 then BA 837 at Dublin
Lisbon → Dublin → London Heathrow
Timetable, Dublin time
13:55EI 483 from Lisbon at the gate
19:25BA 837 to London Heathrow leaves the gate
5 h 30 apart on the timetable
Dublin’s board gives an arrival time for only about 47% of its flights, so many days show no gate time.
The last days
EI 483 and BA 837 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.