EC 1673 then GQ 388 at Athens
Nice → Athens → Thessaloniki
Timetable, Athens time
20:00EC 1673 from Nice at the gate
19:00GQ 388 to Thessaloniki leaves the gate
23 h apart on the timetable, overnight
GQ 388 leaves 23 h after EC 1673 arrives on the timetable: more than half a day, so not a connection we count.