As all of us agree that it is the best that managers come from the same industry and have a technical background, Communication is one of the most important to success a project. Actually, it is one of the major roles for PMs beside planing and other is to connect all the cycle and involve necessary member in order to get the job done efficiently. Also, when management has the technical background they can gauge with the work follow with better understanding. It is very important that everyone work on the project to be on the same page that’s why a lot of the companies invest in software that employee can access the portal and enter all the updates which will be available for all team members involved in the project. One more thing that makes a lot of difference is when people work proactively, in this case, if you report an issue to PMs and they didn’t hear back from them. You can always follow up if you think it is important.