A3 681 then GQ 670 at Athens
Napoli → Athens → Istanbul
Timetable, Athens time
12:45A3 681 from Napoli at the gate
07:00GQ 670 to Istanbul leaves the gate
18 h 15 apart on the timetable, overnight
GQ 670 leaves 18 h 15 after A3 681 arrives on the timetable: more than half a day, so not a connection we count.