A3 275 then A3 314 at Athens
Chios → Athens → Heraklion
Timetable, Athens time
17:00A3 275 from Chios at the gate
13:25A3 314 to Heraklion leaves the gate
20 h 25 apart on the timetable, overnight
A3 314 leaves 20 h 25 after A3 275 arrives on the timetable: more than half a day, so not a connection we count.