AA 734 then BA 1448 at Heathrow
Charlotte → London → Edinburgh
Timetable, London time
12:00AA 734 from Charlotte at the gate
11:55BA 1448 to Edinburgh leaves the gate
23 h 55 apart on the timetable, overnight
BA 1448 leaves 23 h 55 after AA 734 arrives on the timetable: more than half a day, so not a connection we count.