FR 2527 then IB 721 at Madrid
Berlin → Madrid → London Heathrow
Timetable, Madrid time
23:10FR 2527 from Berlin at the gate
15:50IB 721 to London Heathrow leaves the gatealso LA 1701, VY 5176, DT 6160, QR 6906, BA 7068, AA 8652
16 h 40 apart on the timetable, overnight
IB 721 leaves 16 h 40 after FR 2527 arrives on the timetable: more than half a day, so not a connection we count.