Something which comes to mind on this, I read somewhere on here recently that ADHD and stuttering have a huge correlation. It was something like less than 1% of the general population have a stutter, compared to around 50% of people who have ADHD also have a stutter. These numbers are approximate and I do not remember the exact amount. Now, I'm pretty sure people with ADHD can struggle to "register" what people are saying sometimes due to their brain being too noisy. Not trying to diagnose you or anything here, but it may be something that is worth doing a bit of research into. Also yes, I do relate to this. Specifically if there is something else happening in the background (tv is on, crowded room with others speaking). The other sounds don't have to be loud, and I can definitely "hear" what the other person is saying but it's almost like my brain is trying to process what is happening on the TV or listen to Bob's conversation on the other side of the room instead of process what the person in front of me is saying.