KL 980 then KL 1671 at Schiphol
London City → Amsterdam → Catania
Timetable, Amsterdam time
11:00KL 980 from London City at the gate
09:00KL 1671 to Catania leaves the gate
22 h apart on the timetable, overnight
KL 1671 leaves 22 h after KL 980 arrives on the timetable: more than half a day, so not a connection we count.