Technically he wouldn’t be a tipper (vis a vis the stranger on the other side of the fence) even if he were speaking English. To be a tipper one has to have intent to share the information inappropriately. I only included the language bit to make it clear he was taking some level of precaution, and had a reasonable expectation that he was not spreading the information around. Even carelessness does not make one a tipper vis a vis a stranger, IIRC. But it’s been a couple decades since law school, so I could be wrong, laws could have changed, etc.