BA 1453 then BA 928 at Heathrow
Edinburgh → London → Hannover
Timetable, London time
17:40BA 1453 from Edinburgh at the gate
16:05BA 928 to Hannover leaves the gate
22 h 25 apart on the timetable, overnight
BA 928 leaves 22 h 25 after BA 1453 arrives on the timetable: more than half a day, so not a connection we count.