KL 3377 then FR 572 at Madrid
Vigo → Madrid → Porto
Timetable, Madrid time
18:05KL 3377 from Vigo at the gatealso AF 4816, AM 6975, AD 6977, UX 7317, EY 7579
09:15FR 572 to Porto leaves the gate
15 h 10 apart on the timetable, overnight
FR 572 leaves 15 h 10 after KL 3377 arrives on the timetable: more than half a day, so not a connection we count.