BA 549 then EW 9465 at Heathrow
Rome → London → Düsseldorf
Timetable, London time
14:05BA 549 from Rome at the gate
13:55EW 9465 to Düsseldorf leaves the gate
23 h 50 apart on the timetable, overnight
EW 9465 leaves 23 h 50 after BA 549 arrives on the timetable: more than half a day, so not a connection we count.