BA 1339 then BA 1498 at Heathrow
Newcastle → London → Glasgow
Timetable, London time
22:35BA 1339 from Newcastle at the gate
21:10BA 1498 to Glasgow leaves the gate
22 h 35 apart on the timetable, overnight
BA 1498 leaves 22 h 35 after BA 1339 arrives on the timetable: more than half a day, so not a connection we count.