FR 4903 then BA 563 at Fiumicino
Palermo → Rome → London Heathrow
Timetable, Rome time
18:10FR 4903 from Palermo at the gate
07:50BA 563 to London Heathrow leaves the gate
13 h 40 apart on the timetable, overnight
BA 563 leaves 13 h 40 after FR 4903 arrives on the timetable: more than half a day, so not a connection we count.