BA 474 then QR 3687 at Barcelona
London Heathrow → Barcelona → Strasbourg
Timetable, Barcelona time
10:40BA 474 from London Heathrow at the gatealso IB 3657, AA 6813, QR 8340, VY 9552
05:50QR 3687 to Strasbourg leaves the gatealso IB 5944, LL 5944, VY 8144
19 h 10 apart on the timetable, overnight
QR 3687 leaves 19 h 10 after BA 474 arrives on the timetable: more than half a day, so not a connection we count.