FR 5055 then IB 547 at Madrid
Luxembourg → Madrid → Porto
Timetable, Madrid time
22:35FR 5055 from Luxembourg at the gate
15:40IB 547 to Porto leaves the gate
17 h 05 apart on the timetable, overnight
IB 547 leaves 17 h 05 after FR 5055 arrives on the timetable: more than half a day, so not a connection we count.