Are there details for what exactly was leaked? I don't mean to imply that you're wrong if you can't produce a list, and I agree that leaking another person's meeting information to the public is a plausibly fireable offense. I just can't find confirmation that that's what happened in this case, and the clearest details I can find seem to talk about 'leaks' and 'calendar access' as separate incidents.

Bloomberg article for example: https://www.bloomberg.com/news/articles/2019-11-12/one-googl...

"A Google spokeswoman said the company is investigating the employees who were placed on leave. One of them had searched for and shared confidential documents outside the scope of their job, while the other tracked the individual calendars of staff working in the community platforms, human resources, and communications teams, she said. The tracking had made the staff in those departments feel unsafe, the spokeswoman said."