I find that Autism and ADHD are like oil and water. They do not mix and the result can massive fluctuations in behavior and personality. It is better described as both the left and right sides but usually not at the same time. I will say it can be a major benefit sometimes as it means I am typically more willing to "jump without looking" than purely Autistic people.

Funny enough I see a lot of people talk about one when the patterns they describe sound like the other. I've also met people who seem to idolize either Autism or ADHD to the point where even suggesting that they might have something more or something different is interpreted as an attack.