Whether the Chamber of Criminal Appeals was competent to decide the recusal request against the expert.
The Chamber was competent to decide the recusal request directly and definitively.
The Code of Criminal Procedure does not expressly designate the authority for expert recusal; by analogy with Art. 59 para. 1 let. b CPP and in light of the Federal Supreme Court's case law, the appellate authority decides the matter when the public prosecutor is concerned.