FR 5055 then UX 1143 at Madrid
Luxembourg → Madrid → Porto
Timetable, Madrid time
22:35FR 5055 from Luxembourg at the gate
15:00UX 1143 to Porto leaves the gatealso KU 6049
16 h 25 apart on the timetable, overnight
UX 1143 leaves 16 h 25 after FR 5055 arrives on the timetable: more than half a day, so not a connection we count.