TK 21 then A3 435 at Istanbul
Seoul → Istanbul → Heraklion
Timetable, Istanbul time
16:40TK 21 from Seoul at the gate
15:50A3 435 to Heraklion leaves the gate
23 h 10 apart on the timetable, overnight
A3 435 leaves 23 h 10 after TK 21 arrives on the timetable: more than half a day, so not a connection we count.