AT 800 then VY 7504 at Heathrow
Casablanca → London → Seville
Timetable, London time
15:50AT 800 from Casablanca at the gate
15:15VY 7504 to Seville leaves the gate
23 h 25 apart on the timetable, overnight
VY 7504 leaves 23 h 25 after AT 800 arrives on the timetable: more than half a day, so not a connection we count.