A3 371 then GQ 390 at Athens
Mykonos → Athens → Thessaloniki
Timetable, Athens time
10:00A3 371 from Mykonos at the gate
22:10GQ 390 to Thessaloniki leaves the gate
12 h 10 apart on the timetable
GQ 390 leaves 12 h 10 after A3 371 arrives on the timetable: more than half a day, so not a connection we count.