AA 728 then BA 1326 at Heathrow
Philadelphia → London → Newcastle
Timetable, London time
07:50AA 728 from Philadelphia at the gate
06:35BA 1326 to Newcastle leaves the gate
22 h 45 apart on the timetable, overnight
BA 1326 leaves 22 h 45 after AA 728 arrives on the timetable: more than half a day, so not a connection we count.