It might not have been “cognitive”. It could have been a moment of lightheadedness or dizziness. Whatever it was, it’s NOT GOOD.
His balance seemed OK.
That was a TIA. My MIL had a few when she lived with us. One time in the middle of eating a salad. She just stopped. Then she started up again.
It’s disturbing to watch, but painless and often without a impact.
He said he was feeling lightheaded.
Could be his brain is shrinking.