FR 1900 then EI 158 at Dublin
Manchester → Dublin → London Heathrow
Timetable, Dublin time
13:15FR 1900 from Manchester at the gate
10:00EI 158 to London Heathrow leaves the gate
20 h 45 apart on the timetable, overnight
EI 158 leaves 20 h 45 after FR 1900 arrives on the timetable: more than half a day, so not a connection we count.