BA 158 then BA 418 at Heathrow
Hamilton → London → Luxembourg
Timetable, London time
07:20BA 158 from Hamilton at the gate
07:10BA 418 to Luxembourg leaves the gate
23 h 50 apart on the timetable, overnight
BA 418 leaves 23 h 50 after BA 158 arrives on the timetable: more than half a day, so not a connection we count.