A3 765 then GQ 670 at Athens
Helsinki → Athens → Istanbul
Timetable, Athens time
17:50A3 765 from Helsinki at the gate
06:55GQ 670 to Istanbul leaves the gate
13 h 05 apart on the timetable, overnight
GQ 670 leaves 13 h 05 after A3 765 arrives on the timetable: more than half a day, so not a connection we count.