BA 359 then AT 801 at Heathrow
Lyon → London → Casablanca
Timetable, London time
17:25BA 359 from Lyon at the gate
17:10AT 801 to Casablanca leaves the gate
23 h 45 apart on the timetable, overnight
AT 801 leaves 23 h 45 after BA 359 arrives on the timetable: more than half a day, so not a connection we count.