AM 7 then BA 1334 at Heathrow
Mexico City → London → Newcastle
Timetable, London time
15:05AM 7 from Mexico City at the gate
14:40BA 1334 to Newcastle leaves the gate
23 h 35 apart on the timetable, overnight
BA 1334 leaves 23 h 35 after AM 7 arrives on the timetable: more than half a day, so not a connection we count.