A3 353 then EC 3656 at Athens
Santorini → Athens → Milan
Timetable, Athens time
08:55A3 353 from Santorini at the gate
21:40EC 3656 to Milan leaves the gate
12 h 45 apart on the timetable
EC 3656 leaves 12 h 45 after A3 353 arrives on the timetable: more than half a day, so not a connection we count.