FR 8898 then BA 815 at Copenhagen
Porto → Copenhagen → London Heathrow
Timetable, Copenhagen time
22:25FR 8898 from Porto at the gate
18:45BA 815 to London Heathrow leaves the gate
20 h 20 apart on the timetable, overnight
BA 815 leaves 20 h 20 after FR 8898 arrives on the timetable: more than half a day, so not a connection we count.