FR 338 then EI 3226 at Dublin
London Luton → Dublin → Glasgow
Timetable, Dublin time
18:20FR 338 from London Luton at the gate
14:20EI 3226 to Glasgow leaves the gate
20 h apart on the timetable, overnight
EI 3226 leaves 20 h after FR 338 arrives on the timetable: more than half a day, so not a connection we count.