BA 553 then RJ 112 at Heathrow
Rome → London → Amman
Timetable, London time
16:35BA 553 from Rome at the gate
16:05RJ 112 to Amman leaves the gate
23 h 30 apart on the timetable, overnight
RJ 112 leaves 23 h 30 after BA 553 arrives on the timetable: more than half a day, so not a connection we count.