A3 275 then GQ 460 at Athens
Chios → Athens → Karpathos
Timetable, Athens time
17:00A3 275 from Chios at the gate
12:15GQ 460 to Karpathos leaves the gate
19 h 15 apart on the timetable, overnight
GQ 460 leaves 19 h 15 after A3 275 arrives on the timetable: more than half a day, so not a connection we count.