FR 3808 then FR 4597 at Barcelona
Brussels Charleroi → Barcelona → Porto
Timetable, Barcelona time
12:35FR 3808 from Brussels Charleroi at the gate
15:00FR 4597 to Porto leaves the gate
2 h 25 apart on the timetable
The last days
FR 3808 and FR 4597 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.