IB 5423 then EC 7173 at Barcelona
London Heathrow → Barcelona → Berlin
Timetable, Barcelona time
13:10IB 5423 from London Heathrow at the gatealso VY 7641
07:20EC 7173 to Berlin leaves the gate
18 h 10 apart on the timetable, overnight
EC 7173 leaves 18 h 10 after IB 5423 arrives on the timetable: more than half a day, so not a connection we count.