BA 849 then BA 1384 at Heathrow
Warsaw → London → Manchester
Timetable, London time
21:25BA 849 from Warsaw at the gate
20:30BA 1384 to Manchester leaves the gate
23 h 05 apart on the timetable, overnight
BA 1384 leaves 23 h 05 after BA 849 arrives on the timetable: more than half a day, so not a connection we count.