GQ 421 then A3 316 at Athens
Zakynthos → Athens → Heraklion
Timetable, Athens time
19:15GQ 421 from Zakynthos at the gate
15:30A3 316 to Heraklion leaves the gate
20 h 15 apart on the timetable, overnight
A3 316 leaves 20 h 15 after GQ 421 arrives on the timetable: more than half a day, so not a connection we count.