U2 2531 then AZ 571 at Zurich
London Luton → Zurich → Rome
Timetable, Zurich time
15:45U2 2531 from London Luton at the gate
10:55AZ 571 to Rome leaves the gate
19 h 10 apart on the timetable, overnight
AZ 571 leaves 19 h 10 after U2 2531 arrives on the timetable: more than half a day, so not a connection we count.