EC 8382 then EC 8063 at Gatwick
Bordeaux → London → Barcelona
Timetable, London time
11:25EC 8382 from Bordeaux at the gate
09:25EC 8063 to Barcelona leaves the gate
22 h apart on the timetable, overnight
EC 8063 leaves 22 h after EC 8382 arrives on the timetable: more than half a day, so not a connection we count.