BA 859 then WY 102 at Heathrow
Prague → London → Muscat
Timetable, London time
20:25BA 859 from Prague at the gate
20:05WY 102 to Muscat leaves the gate
23 h 40 apart on the timetable, overnight
WY 102 leaves 23 h 40 after BA 859 arrives on the timetable: more than half a day, so not a connection we count.