Comment by ducktypegoose

Most interrupters are exactly like andrewcarter here, they just get excited. When someone does it they're most likely not trying to be rude, and it's well within your consideration to air your complaint, "I am happy to hear your thoughts, but please let me finish my own before you share yours." It isn't a rude or confrontational sentiment. Nobody likes being interrupted, and nobody likes being called-out as an interrupter. Do that once or twice in a meeting and the over-talkers may all but stop moving forward. Nobody is going to resent you for laying down some fundamental courtesies, especially since it means everyone will have better opportunity to speak without interruption.