A3 355 then GQ 690 at Athens
Santorini → Athens → Tirana
Timetable, Athens time
12:40A3 355 from Santorini at the gate
07:50GQ 690 to Tirana leaves the gate
19 h 10 apart on the timetable, overnight
GQ 690 leaves 19 h 10 after A3 355 arrives on the timetable: more than half a day, so not a connection we count.