A3 253 then GQ 670 at Athens
Mytilene → Athens → Istanbul
Timetable, Athens time
13:05A3 253 from Mytilene at the gate
06:55GQ 670 to Istanbul leaves the gate
17 h 50 apart on the timetable, overnight
GQ 670 leaves 17 h 50 after A3 253 arrives on the timetable: more than half a day, so not a connection we count.