BA 482 then FR 6973 at Barcelona
London Heathrow → Barcelona → Rome
Timetable, Barcelona time
14:40BA 482 from London Heathrow at the gatealso IB 3664, AA 6820, QR 8362, VY 9560
10:35FR 6973 to Rome leaves the gate
19 h 55 apart on the timetable, overnight
FR 6973 leaves 19 h 55 after BA 482 arrives on the timetable: more than half a day, so not a connection we count.