BA 1313 then BA 1410 at Heathrow
Aberdeen → London → Belfast City
Timetable, London time
18:45BA 1313 from Aberdeen at the gate
17:45BA 1410 to Belfast City leaves the gate
23 h apart on the timetable, overnight
BA 1410 leaves 23 h after BA 1313 arrives on the timetable: more than half a day, so not a connection we count.