BA 478 then FR 6973 at Barcelona
London Heathrow → Barcelona → Rome
Timetable, Barcelona time
11:35BA 478 from London Heathrow at the gate
10:35FR 6973 to Rome leaves the gate
23 h apart on the timetable, overnight
FR 6973 leaves 23 h after BA 478 arrives on the timetable: more than half a day, so not a connection we count.