hot tubbing
n.— «He might have preferred a new way of hearing expert testimony that Australian lawyers call hot tubbing. In that procedure, also called concurrent evidence, experts are still chosen by the parties, but they testify together at trial—discussing the case, asking each other questions, responding to inquiries from the judge and the lawyers, finding common ground and sharpening the open issues.» —“In U.S., Expert Witnesses Are Partisan” by Adam Liptak New York Times Aug. 11, 2008. (source: Double-Tongued Dictionary)