AA 728 then BA 668 at Heathrow
Philadelphia → London → Marrakesh
Timetable, London time
07:50AA 728 from Philadelphia at the gate
07:35BA 668 to Marrakesh leaves the gate
23 h 45 apart on the timetable, overnight
BA 668 leaves 23 h 45 after AA 728 arrives on the timetable: more than half a day, so not a connection we count.