There have been a couple of things that have recently come up/come out with me, that seem kind of related to what you are saying.

My son mentioned a conversation he had with me one night in our kitchen, where I was upset and crying. He brought it up in conversation and I acted like I knew what he was talking about, while my mind was spinning trying to remember or figure out what was going on. I did ask him about it later, and he told me that we talked about some issues I was trying to work through. My heart was very sad that this had happened with him. MY mind was spinning, again, because I couldn't remember anything about it.

I do remember that I was listening to a song that was really speaking to my heart, and I was thinking about how I would have changed things if I could have. I remember that, then I remember looking at the clock on my stove and seeing what time it was. Then I remember wiping off the kitchen counters and going to bed. Those are very clear memories to me. But, there is some missing in between time that nothing is there.