FR 1900 then FR 1986 at Dublin
Manchester → Dublin → Nantes
Timetable, Dublin time
08:25FR 1900 from Manchester at the gate
05:55FR 1986 to Nantes leaves the gate
21 h 30 apart on the timetable, overnight
FR 1986 leaves 21 h 30 after FR 1900 arrives on the timetable: more than half a day, so not a connection we count.