How to access contact ID and checksum for a new contact from the Caldera form that creates the contact?
There's an example of how to do the second part of this in the integration module's README.


  Checksum support to auto-populate form with URLs like example.com/some-page?cid={contact.contact_id}&amp;{contact.checksum}


The part I'm not aware of is how to properly redirect from one form to a second form with the right contact ID and checksum. I don't have any Civi-on-WordPress instances to test with.