BA 395 then AV 121 at Heathrow
Brussels → London → Bogota
Timetable, London time
21:55BA 395 from Brussels at the gate
21:35AV 121 to Bogota leaves the gate
23 h 40 apart on the timetable, overnight
AV 121 leaves 23 h 40 after BA 395 arrives on the timetable: more than half a day, so not a connection we count.