GQ 821 then A3 292 at Athens
Rome → Athens → Kefalonia
Timetable, Athens time
14:00GQ 821 from Rome at the gate
13:15A3 292 to Kefalonia leaves the gate
23 h 15 apart on the timetable, overnight
A3 292 leaves 23 h 15 after GQ 821 arrives on the timetable: more than half a day, so not a connection we count.