U2 8446 then LS 3107 at Gatwick
Nantes → London → Alicante
Timetable, London time
11:50U2 8446 from Nantes at the gate
05:35LS 3107 to Alicante leaves the gate
17 h 45 apart on the timetable, overnight
LS 3107 leaves 17 h 45 after U2 8446 arrives on the timetable: more than half a day, so not a connection we count.