FR 5150 then EI 174 at Dublin
Glasgow → Dublin → London Heathrow
Timetable, Dublin time
23:40FR 5150 from Glasgow at the gate
16:30EI 174 to London Heathrow leaves the gate
16 h 50 apart on the timetable, overnight
EI 174 leaves 16 h 50 after FR 5150 arrives on the timetable: more than half a day, so not a connection we count.