LH 1753 then BA 949 at Munich
Athens → Munich → London Heathrow
Timetable, Munich time
14:30LH 1753 from Athens at the gate
14:15BA 949 to London Heathrow leaves the gate
23 h 45 apart on the timetable, overnight
BA 949 leaves 23 h 45 after LH 1753 arrives on the timetable: more than half a day, so not a connection we count.