OU 490 then BA 990 at Heathrow
Zagreb → London → Berlin
Timetable, London time
16:05OU 490 from Zagreb at the gate
16:00BA 990 to Berlin leaves the gate
23 h 55 apart on the timetable, overnight
BA 990 leaves 23 h 55 after OU 490 arrives on the timetable: more than half a day, so not a connection we count.