FR 6723 then FR 5301 at Madrid
Marrakesh → Madrid → Luxembourg
Timetable, Madrid time
11:55FR 6723 from Marrakesh at the gate
07:15FR 5301 to Luxembourg leaves the gate
19 h 20 apart on the timetable, overnight
FR 5301 leaves 19 h 20 after FR 6723 arrives on the timetable: more than half a day, so not a connection we count.