FR 5150 then EI 3308 at Dublin
Glasgow → Dublin → Southampton
Timetable, Dublin time
23:40FR 5150 from Glasgow at the gate
17:50EI 3308 to Southampton leaves the gate
18 h 10 apart on the timetable, overnight
EI 3308 leaves 18 h 10 after FR 5150 arrives on the timetable: more than half a day, so not a connection we count.