I’ve never had this experience and I don’t know anyone who had worked under multiple managers. I think it’s very inefficient to have multiple managers for just one project because it requires strong coordination between the individuals and since they have to ultimately agree on decisions before they carry them out, it can hurt the project because progress is hindered. Another way to think about this is the Law of Diminishing Returns. In economics, there is a principle that if you invest more than you should in a given area of a business (e.g. workers, tools, more facilities) it will actually hurt the business. There is a certain threshold beyond which it will hurt the project. Having 1 or 2 people managing a project can work but having multiple people work on a project won’t make the project progress faster. Ultimately, the project manager(s) has to make decisions regarding the work, and if you have more people managers, they will spend more time brainstorming and arguing about what is the best course of action. It’s best to have 1 or 2 managers assigned to a project and to always avoid investing too much in a given area.