A3 203 then A3 354 at Athens
Rhodes → Athens → Santorini
Timetable, Athens time
10:35A3 203 from Rhodes at the gate
10:30A3 354 to Santorini leaves the gate
23 h 55 apart on the timetable, overnight
A3 354 leaves 23 h 55 after A3 203 arrives on the timetable: more than half a day, so not a connection we count.