EC 8382 then BT 652 at Gatwick
Bordeaux → London → Riga
Timetable, London time
11:25EC 8382 from Bordeaux at the gate
09:05BT 652 to Riga leaves the gate
21 h 40 apart on the timetable, overnight
BT 652 leaves 21 h 40 after EC 8382 arrives on the timetable: more than half a day, so not a connection we count.