BA 250 then BA 418 at Heathrow
Santiago de Chile → London → Luxembourg
Timetable, London time
06:35BA 250 from Santiago de Chile at the gate
06:05BA 418 to Luxembourg leaves the gate
23 h 30 apart on the timetable, overnight
BA 418 leaves 23 h 30 after BA 250 arrives on the timetable: more than half a day, so not a connection we count.