AA 9604 then BA 1394 at Heathrow
Charlotte → London → Belfast City
Timetable, London time
09:40AA 9604 from Charlotte at the gate
09:20BA 1394 to Belfast City leaves the gate
23 h 40 apart on the timetable, overnight
BA 1394 leaves 23 h 40 after AA 9604 arrives on the timetable: more than half a day, so not a connection we count.