GQ 381 then EC 3654 at Athens
Thessaloniki → Athens → Milan
Timetable, Athens time
09:55GQ 381 from Thessaloniki at the gate
22:05EC 3654 to Milan leaves the gate
12 h 10 apart on the timetable
EC 3654 leaves 12 h 10 after GQ 381 arrives on the timetable: more than half a day, so not a connection we count.