GQ 31 then A3 364 at Athens
Kalymnos → Athens → Santorini
Timetable, Athens time
09:15GQ 31 from Kalymnos at the gate
21:30A3 364 to Santorini leaves the gate
12 h 15 apart on the timetable
A3 364 leaves 12 h 15 after GQ 31 arrives on the timetable: more than half a day, so not a connection we count.