W6 2391 then FR 5301 at Madrid
Budapest → Madrid → Luxembourg
Timetable, Madrid time
08:55W6 2391 from Budapest at the gate
07:15FR 5301 to Luxembourg leaves the gate
22 h 20 apart on the timetable, overnight
FR 5301 leaves 22 h 20 after W6 2391 arrives on the timetable: more than half a day, so not a connection we count.