A3 791 then GQ 346 at Athens
Ljubljana → Athens → Santorini
Timetable, Athens time
21:00A3 791 from Ljubljana at the gate
20:15GQ 346 to Santorini leaves the gate
23 h 15 apart on the timetable, overnight
GQ 346 leaves 23 h 15 after A3 791 arrives on the timetable: more than half a day, so not a connection we count.