No, it's daydreaming. Simply getting stuck in your thoughts and doing stuff without thinking about what you're doing until you break out from daydreaming.

Edit: I experienced dissociation quite a few times in the past but not even close to the amount of daydreams I had.

Yeah it happens to me sometimes. But what’s real scary is it happening while driving. I left work one afternoon and felt like I had teleported 30 minutes into the future and ended up at my house. Didn’t remember anything in between. Luckily it’s only happened to me once.

Dissociation and distraction by you inner conversation can look the same from the outside. I always thought that I was dissociating, because the descriptions fiit very nicely. Dissociated state is however a trauma response and the onset somewhat predictable, I lack the trauma part. (unless you subscribe to the theory of complex ptsd and adhd, but the same distinction applies nevertheless. The distracted state remains unpredictable)

I just looked it up and there seems to be a link between ADHD and dissociation. I don't know how strong this link is though: https://www.medicalnewstoday.com/articles/adhd-dissociation#what-is-dissociation