What is the test for denying or denying a witness's prior testimony?

Here, defendant contends that Witness No. 13's prior testimony contained multiple levels of hearsay and should not have been admitted. Because defendant did not object to the admission of the testimony on any ground, this claim is forfeited. (People v. Williams (1976) 16 Cal.3d 663, 667, fn. 4 ["It is the general rule, of course, that questions relating to the admissibility of evidence will not be reviewed on appeal absent a specific and timely objection at trial on the ground sought to be urged on appeal"].) Nor does defendant demonstrate that any objection would have been futile.

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