How you inherit AS is not straightforward. My uncle is probably AS, my dad is probably HSP as my brother plus my dad is a geek. My mom is very very slight autistic but mostly ADD. No one but me is diagnosed. My grampa was probably AS and his mother was unusual.

Autism seems sometimes be less inherited but maybe because a LFA might not have many babies. Despite that autism seems to pop up more sporadically there are many families that has a kid with AS and a kid with autism. So it seems in some families it leads only to AS and in some families with AS it can lead to autism as well.

So in some cases a person with AS can have a child with autism.

Also the Genius Gene bank created a kid with autism. So intelligence might be a risk factor.