What is the test for cross-examination in a civil case?

prototypical form of bias on the part of the witness, and thereby, to expose to the jury the facts from which jurors ... could appropriately draw inferences relating to the reliability of the witness." (People v. Chatman (2006) 38 Cal.4th 344, 372, internal citations and quotation marks omitted.) However, "the trial court retains wide latitude in restricting cross-examination that is repetitive, prejudicial, confusing of the issues, or of marginal relevance ... Thus, unless the defendant can show that the prohibited cross-examination would have produced a significantly different impression of [the witnesses'] credibility, the trial court's exercise of its discretion in this regard does not violate the Sixth Amendment." (Ibid., internal citations and quotation marks omitted.)