I didn't mean middleman/process mediating communication. By "skilled project management", I meant structuring tasks and setting priorities in such a way as to minimize the required amount of communication - particularly, synchronous communication between the workers. An hour (on average) or two per day replying to messages and doing code review, an occasional meeting every other week - sure. But if your senior devs are spending most of their time each day in meetings, then either you're running a bootcamp, or something is very wrong.