BA 1370 then FR 1957 at Manchester
London Heathrow → Manchester → Dublin
Timetable, Manchester time
15:35BA 1370 from London Heathrow at the gate
09:00FR 1957 to Dublin leaves the gate
17 h 25 apart on the timetable, overnight
FR 1957 leaves 17 h 25 after BA 1370 arrives on the timetable: more than half a day, so not a connection we count.