I've found it super interesting how many people in relationships have written in to say there's the opposite dynamic (like yours, where your wife is the non-jumper-inner). So nice to be in a partnership with a good listener, I hope that makes for a good strong relationship between the two of you!
I definitely have family members who can do a lot of the talking. But I know several of them aren't doing it to dominate, they just are real talkers. I'm lucky that most of the overlappers/talkers I've known have also been really good at heart.
Thank you for reading, but I must say my husband is not super excited when I ask him to read Internet stuff (although he will look at quick funny memes), so maybe your wife doesn't want to read this. :)