6H 561 then A3 992 at Athens
Tel Aviv → Athens → Istanbul
Timetable, Athens time
18:006H 561 from Tel Aviv at the gate
13:10A3 992 to Istanbul leaves the gate
19 h 10 apart on the timetable, overnight
A3 992 leaves 19 h 10 after 6H 561 arrives on the timetable: more than half a day, so not a connection we count.