OCD and Autism – Where does one begin and the other end?

In Learning Disability Today – https://www.learningdisabilitytoday.co.uk/ocd-and-autism-where-does-one-begin-and-the-other-end “There’s an estimated 17% of autistic people diagnosed with OCD (as opposed to the 1.6% of the general population). The connection is clear, but the distinction clouded – how can we treat one without undermining the other?”