BA 1331 then BA 492 at Heathrow
Newcastle → London → Gibraltar
Timetable, London time
13:45BA 1331 from Newcastle at the gate
11:35BA 492 to Gibraltar leaves the gate
21 h 50 apart on the timetable, overnight
BA 492 leaves 21 h 50 after BA 1331 arrives on the timetable: more than half a day, so not a connection we count.