KM 116 then U2 8523 at Gatwick
MLK → London → Porto
Timetable, London time
10:55KM 116 from MLK at the gate
06:30U2 8523 to Porto leaves the gate
19 h 35 apart on the timetable, overnight
U2 8523 leaves 19 h 35 after KM 116 arrives on the timetable: more than half a day, so not a connection we count.