A3 275 then GQ 920 at Athens
Chios → Athens → Madrid
Timetable, Athens time
17:00A3 275 from Chios at the gate
10:30GQ 920 to Madrid leaves the gate
17 h 30 apart on the timetable, overnight
GQ 920 leaves 17 h 30 after A3 275 arrives on the timetable: more than half a day, so not a connection we count.