BA 491 then BA 1338 at Heathrow
Gibraltar → London → Newcastle
Timetable, London time
16:15BA 491 from Gibraltar at the gate
16:05BA 1338 to Newcastle leaves the gate
23 h 50 apart on the timetable, overnight
BA 1338 leaves 23 h 50 after BA 491 arrives on the timetable: more than half a day, so not a connection we count.