FR 5150 then FR 343 at Dublin
Glasgow → Dublin → London Gatwick
Timetable, Dublin time
16:55FR 5150 from Glasgow at the gate
09:00FR 343 to London Gatwick leaves the gate
16 h 05 apart on the timetable, overnight
FR 343 leaves 16 h 05 after FR 5150 arrives on the timetable: more than half a day, so not a connection we count.