A3 307 then GQ 30 at Athens
Heraklion → Athens → Kalymnos
Timetable, Athens time
12:20A3 307 from Heraklion at the gate
06:45GQ 30 to Kalymnos leaves the gate
18 h 25 apart on the timetable, overnight
GQ 30 leaves 18 h 25 after A3 307 arrives on the timetable: more than half a day, so not a connection we count.