LH 97 then BA 901 at Frankfurt
Munich → Frankfurt am Main → London Heathrow
Timetable, Frankfurt am Main time
11:00LH 97 from Munich at the gate
10:40BA 901 to London Heathrow leaves the gate
23 h 40 apart on the timetable, overnight
BA 901 leaves 23 h 40 after LH 97 arrives on the timetable: more than half a day, so not a connection we count.