LA 1523 then FR 8239 at Madrid
Vigo → Madrid → Porto
Timetable, Madrid time
10:30LA 1523 from Vigo at the gatealso VY 5156, AT 5433, PC 7866
17:05FR 8239 to Porto leaves the gate
6 h 35 apart on the timetable
The last days
LA 1523 and FR 8239 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.