FR 5564 then FR 4518 at Dublin
Glasgow → Dublin → Athens
Timetable, Dublin time
21:50FR 5564 from Glasgow at the gate
17:50FR 4518 to Athens leaves the gate
20 h apart on the timetable, overnight
FR 4518 leaves 20 h after FR 5564 arrives on the timetable: more than half a day, so not a connection we count.