EC 8306 then U2 8873 at Gatwick
Milan → London → Bordeaux
Timetable, London time
14:10EC 8306 from Milan at the gate
06:50U2 8873 to Bordeaux leaves the gate
16 h 40 apart on the timetable, overnight
U2 8873 leaves 16 h 40 after EC 8306 arrives on the timetable: more than half a day, so not a connection we count.