BA 476 then FR 6341 at Barcelona
London Heathrow → Barcelona → Rome
Timetable, Barcelona time
11:25BA 476 from London Heathrow at the gate
05:45FR 6341 to Rome leaves the gate
18 h 20 apart on the timetable, overnight
FR 6341 leaves 18 h 20 after BA 476 arrives on the timetable: more than half a day, so not a connection we count.