KL 1010 then FR 421 at Schiphol
London Heathrow → Amsterdam → Dublin
Timetable, Amsterdam time
18:40KL 1010 from London Heathrow at the gate
16:15FR 421 to Dublin leaves the gate
21 h 35 apart on the timetable, overnight
FR 421 leaves 21 h 35 after KL 1010 arrives on the timetable: more than half a day, so not a connection we count.