A3 791 then GQ 350 at Athens
Ljubljana → Athens → Santorini
Timetable, Athens time
21:00A3 791 from Ljubljana at the gate
15:40GQ 350 to Santorini leaves the gate
18 h 40 apart on the timetable, overnight
GQ 350 leaves 18 h 40 after A3 791 arrives on the timetable: more than half a day, so not a connection we count.