A3 731 then GQ 670 at Athens
Valletta → Athens → Istanbul
Timetable, Athens time
12:30A3 731 from Valletta at the gate
07:00GQ 670 to Istanbul leaves the gate
18 h 30 apart on the timetable, overnight
GQ 670 leaves 18 h 30 after A3 731 arrives on the timetable: more than half a day, so not a connection we count.