FR 2527 then IB 723 at Madrid
Berlin → Madrid → London Heathrow
Timetable, Madrid time
23:10FR 2527 from Berlin at the gate
16:50IB 723 to London Heathrow leaves the gatealso LA 1702, VY 5421, QR 6907, BA 7050
17 h 40 apart on the timetable, overnight
IB 723 leaves 17 h 40 after FR 2527 arrives on the timetable: more than half a day, so not a connection we count.