GQ 671 then GQ 30 at Athens
Istanbul → Athens → Kalymnos
Timetable, Athens time
23:10GQ 671 from Istanbul at the gate
11:45GQ 30 to Kalymnos leaves the gate
12 h 35 apart on the timetable, overnight
GQ 30 leaves 12 h 35 after GQ 671 arrives on the timetable: more than half a day, so not a connection we count.