That's not what JB has written to Mike or said to NGB on the phone.
In 2017 I asked Jeremy via a third party about the tactics that Rivlin had prepared for the Trial. The following text is agreed by Jeremy as accurate. Jeremy said that Rivlin did not discuss tactics and said that he doesn't believe that he had any. Jeremy said Rivlin would not challenge the police and when Jeremy told him that he (Rivlin) had to expose the relatives as liars Rivlin told him "I can't do that". When Jeremy expressed to Rivlin that he ought to try to show that Sheila was responsible he said that he wasn't allowed to do that because Sheila wasn't being prosecuted, he was.
Jeremy said that during the trial Rivlin didn't challenge anyone, which is apparent from reading trial testimony. Indeed, Rivlin defended himself when Drake was giving him a mild dressing down by pointing out that he had only accused one witness, Julie Mugford, of lying on oath.
Jeremy said he is convinced that Rivlin had already conceded defeat before the trial commenced and was just going through the motions.