How to run multiple playbooks in parallel? Async and poll don't seem to support "Include playbook"

How to run multiple playbooks in parallel? Async and poll don’t seem to support “Include playbook”

I want to do something like

  • include: …/abc.yml
    async: 500
    poll: 0
    tags: [abc]

  • include: …/xyz.yml

async: 500
poll: 0
tags: [xyz]

I get this :
ERROR! ‘async’ is not a valid attribute for a PlaybookInclude

Is this even possible with Ansible modules?