Condor and He-177 vs convoy OS67/KMS41

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Hello

12/02/44

He-177 A-3(WkNr535679) Hptm.Walter Rieder shot down by S/LT Brander (881 FAA Sqd).

He-177 A-3(WkNr535679) Oblt.Heinz Ewers shot down by 418°Sq (Who?)

sources:Fabien Reberac

Condor (F8+BR) Fw.Karl-Heinz Schairer shot down by 3"Mosquito" of 157°Sqd (source Chris Goss)

BUT shot down by S/L.N.K Turner of 881 FAA Sqd.(source Luftwaffe in Focus n°26).

Condor Oblt.Gunther Seide shot down?

Questions:
1)What are the real losses?

2)Who shot down who?

Thanks in advance

Michel