FR 7595 then GQ 350 at Athens
Budapest → Athens → Santorini
Timetable, Athens time
00:30FR 7595 from Budapest at the gate
15:40GQ 350 to Santorini leaves the gate
15 h 10 apart on the timetable
GQ 350 leaves 15 h 10 after FR 7595 arrives on the timetable: more than half a day, so not a connection we count.