U2 8056 then U2 8027 at Gatwick
Barcelona → London → Mahón
Timetable, London time
12:10U2 8056 from Barcelona at the gate
09:00U2 8027 to Mahón leaves the gate
20 h 50 apart on the timetable, overnight
U2 8027 leaves 20 h 50 after U2 8056 arrives on the timetable: more than half a day, so not a connection we count.