BA 949 then DL 9931 at Heathrow
Munich → London → Atlanta
Timetable, London time
16:55BA 949 from Munich at the gate
16:35DL 9931 to Atlanta leaves the gate
23 h 40 apart on the timetable, overnight
DL 9931 leaves 23 h 40 after BA 949 arrives on the timetable: more than half a day, so not a connection we count.