EI 3391 then FR 5565 at Dublin
Leeds → Dublin → Glasgow
Timetable, Dublin time
09:50EI 3391 from Leeds at the gate
06:10FR 5565 to Glasgow leaves the gate
20 h 20 apart on the timetable, overnight
FR 5565 leaves 20 h 20 after EI 3391 arrives on the timetable: more than half a day, so not a connection we count.