BA 554 then FR 4904 at Fiumicino
London Heathrow → Rome → Palermo
Timetable, Rome time
14:55BA 554 from London Heathrow at the gate
08:20FR 4904 to Palermo leaves the gate
17 h 25 apart on the timetable, overnight
FR 4904 leaves 17 h 25 after BA 554 arrives on the timetable: more than half a day, so not a connection we count.