LH 1279 then EN 396 at Frankfurt
Athens → Frankfurt am Main → Luxembourg
Timetable, Frankfurt am Main time
20:25LH 1279 from Athens at the gate
17:15EN 396 to Luxembourg leaves the gate
20 h 50 apart on the timetable, overnight
EN 396 leaves 20 h 50 after LH 1279 arrives on the timetable: more than half a day, so not a connection we count.