GQ 927 then A3 274 at Athens
Barcelona → Athens → Chios
Timetable, Athens time
02:40GQ 927 from Barcelona at the gate
14:45A3 274 to Chios leaves the gate
12 h 05 apart on the timetable
A3 274 leaves 12 h 05 after GQ 927 arrives on the timetable: more than half a day, so not a connection we count.