I was in one particular meeting where I had some technical details I was trying to give (that were actually relevant and important). But each time I started trying to give them, I got interrupted by the marketing people. (One in particular. She was pretty loud, too.) I backed off, because I figured that there would be another point in the meeting where I could lay out the tech stuff.

But after the third time, when she interrupted, I just continued (louder than her), "As I was saying, the way the tech works is..."

She didn't interrupt me again. (Of course, I didn't say much more in the meeting once I said what I needed to...) I don't remember whether she interrupted anyone else after that.