EC 4389 then IB 547 at Madrid
Lyon → Madrid → Porto
Timetable, Madrid time
12:30EC 4389 from Lyon at the gate
15:40IB 547 to Porto leaves the gate
3 h 10 apart on the timetable
The last days
EC 4389 and IB 547 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.