KL 1654 then U2 2172 at Schiphol
Firenze → Amsterdam → Manchester
Timetable, Amsterdam time
15:15KL 1654 from Firenze at the gate
14:55U2 2172 to Manchester leaves the gate
23 h 40 apart on the timetable, overnight
U2 2172 leaves 23 h 40 after KL 1654 arrives on the timetable: more than half a day, so not a connection we count.