W4 3173 then FR 5482 at Madrid
Bucharest → Madrid → Porto
Timetable, Madrid time
17:50W4 3173 from Bucharest at the gate
09:05FR 5482 to Porto leaves the gate
15 h 15 apart on the timetable, overnight
FR 5482 leaves 15 h 15 after W4 3173 arrives on the timetable: more than half a day, so not a connection we count.