BA 558 then FR 5816 at Fiumicino
London Heathrow → Rome → Bari
Timetable, Rome time
18:30BA 558 from London Heathrow at the gate
17:45FR 5816 to Bari leaves the gate
23 h 15 apart on the timetable, overnight
FR 5816 leaves 23 h 15 after BA 558 arrives on the timetable: more than half a day, so not a connection we count.