I had a co-worker who was on the spectrum. Communicating with him face-to-face or on a voice call was difficult. He would often latch onto a small aspect of the

I had a co-worker who was on the spectrum. Communicating with him face-to-face or on a voice call was difficult. He would often latch onto a small aspect of the conversation that didn't really matter, and then walk away from the conversation with only that small thing in mind. This would lead him to work on seemingly random things. I found that communicating with him in writing seemed to work much better. If you have not already, try switching to written communication. Beyond that, I don't have any advice to offer.