U2 2169 then KL 1655 at Schiphol
Manchester → Amsterdam → Firenze
Timetable, Amsterdam time
15:40U2 2169 from Manchester at the gate
14:30KL 1655 to Firenze leaves the gate
22 h 50 apart on the timetable, overnight
KL 1655 leaves 22 h 50 after U2 2169 arrives on the timetable: more than half a day, so not a connection we count.