Some people have a competitive bone in their body, and they use it in situations like this. I’ve never experienced it, that I know of, but it’s sometimes used in movies and television shows as a form of humor.
Two women in our family, as well as several friends, usually have a similar personal story to share. They don’t interrupt, they ask questions along the way, and then share their story. They are also the ones that inquire about the situation at a later time . They relate and care.
Some people interrupt. Maybe they can’t wait to share; maybe I’ve gone on too long. I just stop and let them talk. And I usually don’t go back to what I was saying unless they ask.
I do have a terrible habit of finishing someone’s sentence if there is a long pause. Some respond with, ”Exactly!”, while others will scowl and say, “Nooo,...” and finish their thought.