FR 331 then EI 3252 at Dublin
London Luton → Dublin → Edinburgh
Timetable, Dublin time
15:40FR 331 from London Luton at the gate
10:20EI 3252 to Edinburgh leaves the gate
18 h 40 apart on the timetable, overnight
EI 3252 leaves 18 h 40 after FR 331 arrives on the timetable: more than half a day, so not a connection we count.