BA 855 then EW 7463 at Heathrow
Prague → London → Hamburg
Timetable, London time
16:05BA 855 from Prague at the gate
14:10EW 7463 to Hamburg leaves the gate
22 h 05 apart on the timetable, overnight
EW 7463 leaves 22 h 05 after BA 855 arrives on the timetable: more than half a day, so not a connection we count.