VL 1808 then FR 8003 at Barcelona
Munich → Barcelona → Porto
Timetable, Barcelona time
08:25VL 1808 from Munich at the gate
11:40FR 8003 to Porto leaves the gate
3 h 15 apart on the timetable
The last days
VL 1808 and FR 8003 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.