BA 359 then BA 227 at Heathrow
Lyon → London → Atlanta
Timetable, London time
16:00BA 359 from Lyon at the gate
15:35BA 227 to Atlanta leaves the gate
23 h 35 apart on the timetable, overnight
BA 227 leaves 23 h 35 after BA 359 arrives on the timetable: more than half a day, so not a connection we count.