EC 3651 then GQ 384 at Athens
Milan → Athens → Thessaloniki
Timetable, Athens time
23:00EC 3651 from Milan at the gate
14:30GQ 384 to Thessaloniki leaves the gate
15 h 30 apart on the timetable, overnight
GQ 384 leaves 15 h 30 after EC 3651 arrives on the timetable: more than half a day, so not a connection we count.