GQ 345 then EW 2685 at Athens
Santorini → Athens → Stuttgart
Timetable, Athens time
19:35GQ 345 from Santorini at the gate
11:40EW 2685 to Stuttgart leaves the gate
16 h 05 apart on the timetable, overnight
EW 2685 leaves 16 h 05 after GQ 345 arrives on the timetable: more than half a day, so not a connection we count.