I do this a lot, sorry. My ADHD brain really wants to take an active part in the conversation or else I'm likely to get distracted by my own thoughts and zone out for the next couple sentences. And then make you repeat them anyway, infuriating you in a different way.

Friends and family know this about me (more or less), so they treat it as what it is: an attempt to collaborate to reach a shared understanding.

With strangers and acquaintances, I know this can be irritating so I curb it at the expense of possibly zoning out.

I mention all this to offset the following assumption:

> A lot of people don't have the patience to unspool a thought or the instinct to ask a clarifying question instead of plowing ahead with their mistaken assumption.

It's not for a lack of patience or instinct or intelligence or <insert virtue or character trait of choice here>. Some of us find it genuinely hard to keep lots of context in working memory (due to a working memory deficit), without taking an active part in whatever demands it. And it's not for lack of trying.