LH 1278 then BA 635 at Athens
Frankfurt am Main → Athens → London Heathrow
Timetable, Athens time
17:25LH 1278 from Frankfurt am Main at the gate
17:15BA 635 to London Heathrow leaves the gate
23 h 50 apart on the timetable, overnight
BA 635 leaves 23 h 50 after LH 1278 arrives on the timetable: more than half a day, so not a connection we count.