A3 317 then A3 868 at Athens
Heraklion → Athens → Krakow
Timetable, Athens time
14:30A3 317 from Heraklion at the gate
11:00A3 868 to Krakow leaves the gate
20 h 30 apart on the timetable, overnight
A3 868 leaves 20 h 30 after A3 317 arrives on the timetable: more than half a day, so not a connection we count.