Yes. I had a cat that was “slow”. He could not meow properly and was always a couple of steps behind all the other cats both physically and mentally. Many times he would just stare off into space as if his mind was on hold. He would not respond to physical stimulus at these times.
I remember we had caught a mouse in a live trap. As the mouse ran from one end to the other, his brother Pepsi would follow the actions of the mouse and never let it leave his sight Moxie, on the other hand was way out of synch with it, looking where it had been, not where it was. .
I had them both with me when I went to college. I could put Moxie on my shoulders when I walked around and he would just stay there like a living collar. When I drove back home, I would put him up on my shoulders and he would stay there, front paws over the left shoulder and back paws over the right, and would ride there between my head and the headrest for the five hours it took to get home. While Pepsi curled up on the passenger seat and slept.
The first time I left them alone over the weekend both Moxie and Pepsi were gone when I got home Sunday. On Wednesday Pepsi showed up at the house, came inside, ate and then left again. Two hours later he showed up again with Moxie in tow. The next time I left this repeated itself except it happened on Tuesday. The third time, the same thing but on Monday. After that, Pepsi was always waiting for me Sunday night. He would eat then go off for an hour or so and show up with his brother.
Moxie was not a stupid cat, just not all there.