That does not match my second hand accounts of how the law and lawyers work at this level, at least in the USA. Lawyers, at least in part because it is there job, will scrutinize every communication for anything that has the slight chance to be interrupted in their cases favor regardless if that interpretation is truthful.
The system of law in the USA is adversarial, the Lawyer's job is to present the case in the best possible light not to find and present the truth. So if something taken out of context plays well for their case it will be used. That could include decades old communications that no one remembers happening on a tangental topic.