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.

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

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)