BA 901 then BA 438 at Heathrow
Frankfurt am Main → London → Amsterdam
Timetable, London time
12:30BA 901 from Frankfurt am Main at the gate
11:50BA 438 to Amsterdam leaves the gate
23 h 20 apart on the timetable, overnight
BA 438 leaves 23 h 20 after BA 901 arrives on the timetable: more than half a day, so not a connection we count.