BA 371 then BA 966 at Heathrow
Toulouse → London → Hamburg
Timetable, London time
12:25BA 371 from Toulouse at the gate
12:00BA 966 to Hamburg leaves the gate
23 h 35 apart on the timetable, overnight
BA 966 leaves 23 h 35 after BA 371 arrives on the timetable: more than half a day, so not a connection we count.