A3 357 then A3 868 at Athens
Santorini → Athens → Krakow
Timetable, Athens time
13:35A3 357 from Santorini at the gate
11:00A3 868 to Krakow leaves the gate
21 h 25 apart on the timetable, overnight
A3 868 leaves 21 h 25 after A3 357 arrives on the timetable: more than half a day, so not a connection we count.