A3 993 then EC 3656 at Athens
Istanbul → Athens → Milan
Timetable, Athens time
17:15A3 993 from Istanbul at the gate
11:10EC 3656 to Milan leaves the gate
17 h 55 apart on the timetable, overnight
EC 3656 leaves 17 h 55 after A3 993 arrives on the timetable: more than half a day, so not a connection we count.