FR 338 then FR 5565 at Dublin
London Luton → Dublin → Glasgow
Timetable, Dublin time
16:20FR 338 from London Luton at the gate
11:30FR 5565 to Glasgow leaves the gate
19 h 10 apart on the timetable, overnight
FR 5565 leaves 19 h 10 after FR 338 arrives on the timetable: more than half a day, so not a connection we count.