U2 8306 then U2 8115 at Gatwick
Milan → London → Ibiza
Timetable, London time
20:55U2 8306 from Milan at the gate
16:20U2 8115 to Ibiza leaves the gate
19 h 25 apart on the timetable, overnight
U2 8115 leaves 19 h 25 after U2 8306 arrives on the timetable: more than half a day, so not a connection we count.