EC 3651 then A3 120 at Athens
Milan → Athens → Thessaloniki
Timetable, Athens time
23:00EC 3651 from Milan at the gate
16:35A3 120 to Thessaloniki leaves the gate
17 h 35 apart on the timetable, overnight
A3 120 leaves 17 h 35 after EC 3651 arrives on the timetable: more than half a day, so not a connection we count.