Can a witness who testifies as an expert be cross-examined?

Under Evidence Code section 721, a witness who testifies as an expert may, of course, be cross-examined to the same extent as any other witness. While the scope of cross-examination is "broad," (People v. Doolin (2009) 45 Cal.4th 390, 434) it is not boundless. Defendant's statements to the police related to the specific events at issue in the trial, and were directly relevant to the charge of murder and the defense theory that defendant acted in the heat of passion. "Evidence Code section 352 authorizes the court to exclude from an expert's testimony any hearsay matter whose irrelevance, unreliability, or potential for prejudice outweighs its proper probative value. [Citation.]" (People v. Montiel (1993) 5 Cal.4th 877, 919.) Defendant's statement to the police was

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