It's been my experience that I need to take full responsibility for the effectiveness of my communications.
A few years ago, I threw together a PowerPoint show, based on Randall Munroe's Communication comic[0]. I did it for an organization I participate in, that is full of some of the worst communicators I've ever encountered.
It astounds me, how people that get paid to communicate, don't understand the fundamentals.
[0] https://docs.google.com/presentation/d/1qQDAuhGvBvBlZVH2zn_V... (You need to view the slide notes, or it doesn't make any sense).