ADHD part of Autism

Hi everyone 

ive been posting about my partner who has been diagnosed with ADD. We are separated and he got diagnosed after we separated. I didn't realise he had ADD whilst we were together mainly because he very tactfully made everything my fault and I believed him. Nwys after much overthinking I've realised he also has symptoms of Autism. Has anyone else experience with their Adhd partners also having autism? He's high functioning and nobody believes he has ADD let alone anything else. He masks it very well.