Incidents and accidents notwithstanding, those involved in calls with and modelling for analysts and rating agencies are well aware of these rules. At least in my firm there is proper compliance coaching and continual awareness programmes about closed periods and internal continuity on what is disclosed publicly and when. Schedules are transparent and analyst calls in audio or transcripts are made available. Industry professionals even read these of competing firms, especially when there's trouble or a lol to be had. There's a lot that can go wrong, intentionally or not, but this part is quite a managed process.
