UA 3908 then BA 196 at Houston
Orlando → Houston → London
Timetable, Houston time
08:45UA 3908 from Orlando at the gate
21:40BA 196 to London leaves the gate
12 h 55 apart on the timetable
BA 196 leaves 12 h 55 after UA 3908 arrives on the timetable: more than half a day, so not a connection we count.