LH 1279 then TK 1594 at Frankfurt
Athens → Frankfurt am Main → Istanbul
Timetable, Frankfurt am Main time
20:25LH 1279 from Athens at the gate
18:10TK 1594 to Istanbul leaves the gate
21 h 45 apart on the timetable, overnight
TK 1594 leaves 21 h 45 after LH 1279 arrives on the timetable: more than half a day, so not a connection we count.