BA 494 then LO 4704 at Barcelona
London Heathrow → Barcelona → Lisbon
Timetable, Barcelona time
19:50BA 494 from London Heathrow at the gate
10:55LO 4704 to Lisbon leaves the gate
15 h 05 apart on the timetable, overnight
LO 4704 leaves 15 h 05 after BA 494 arrives on the timetable: more than half a day, so not a connection we count.