Job postings on three different freelance websites has yielded only promises, but no track record of success in doing this. That even with an offering of 1k to get this done correctly.
"Correctly" being shared registration and login between XF and Dolphin, without using iframes, and both the header and footer of Dolphin used with XF.
The difficulty in finding someone who can actually do this is somewhat surprising (and of course discouraging).
Thanks for any help. Please feel free to message me if you or someone you know can do this.