BA 1366 then FR 1957 at Manchester
London Heathrow → Manchester → Dublin
Timetable, Manchester time
11:45BA 1366 from London Heathrow at the gate
09:00FR 1957 to Dublin leaves the gate
21 h 15 apart on the timetable, overnight
FR 1957 leaves 21 h 15 after BA 1366 arrives on the timetable: more than half a day, so not a connection we count.