From what I have read, sometimes a person THINKS he is speaking English, but gibberish comes out.. scrambled signals in the brain. Check with your neurologist. If it was sudden onset, he may have had a TIA...mild stroke.

Yes, my husband went thru a stage where he was talking, and it was all gibberish but not to him. I found rather than trying to get him to explain I just nodded along and said reassuring things. He did this for a few months in spurts then it stopped. It seemed to me like the brain was misfiring and just going bananas, so we just went with the flow...easier in the long run!

I think it’s probably just gibberish like a very small child would do before they learn to talk.

When DH is awake in the night but lost in one delusion or another, his voice changes to a higher pitch and he goes back to speaking’Trini’. It’s the Trinidad English of his youth.

My wife mumbles in her sleep I can’t understand her. Must be the AZ