GQ 219 then A3 352 at Athens
Heraklion → Athens → Santorini
Timetable, Athens time
12:20GQ 219 from Heraklion at the gate
06:50A3 352 to Santorini leaves the gate
18 h 30 apart on the timetable, overnight
A3 352 leaves 18 h 30 after GQ 219 arrives on the timetable: more than half a day, so not a connection we count.