A3 275 then A3 120 at Athens
Chios → Athens → Thessaloniki
Timetable, Athens time
17:00A3 275 from Chios at the gate
16:35A3 120 to Thessaloniki leaves the gate
23 h 35 apart on the timetable, overnight
A3 120 leaves 23 h 35 after A3 275 arrives on the timetable: more than half a day, so not a connection we count.