BA 793 then UL 504 at Heathrow
Göteborg → London → Colombo
Timetable, London time
21:10BA 793 from Göteborg at the gate
20:40UL 504 to Colombo leaves the gate
23 h 30 apart on the timetable, overnight
UL 504 leaves 23 h 30 after BA 793 arrives on the timetable: more than half a day, so not a connection we count.