BA 961 then BA 219 at Heathrow
Hamburg → London → Denver
Timetable, London time
12:20BA 961 from Hamburg at the gate
12:10BA 219 to Denver leaves the gate
23 h 50 apart on the timetable, overnight
BA 219 leaves 23 h 50 after BA 961 arrives on the timetable: more than half a day, so not a connection we count.