QR 105 then BA 418 at Heathrow
Doha → London → Luxembourg
Timetable, London time
07:20QR 105 from Doha at the gate
06:05BA 418 to Luxembourg leaves the gate
22 h 45 apart on the timetable, overnight
BA 418 leaves 22 h 45 after QR 105 arrives on the timetable: more than half a day, so not a connection we count.