@julian thanks 🙂 I am passing those additional details now.
Wordpress + WHMCS + NodeBB SSO

Is this possible to have a single sign on for all 3?
I know it's possible to do WHMCS + WordPress using this bridge plugin:
I found this plugin for NodeBB + WP too:
https://github.com/beingmohit/NodeBBWordpressAuthHowever, what about all 3 to be consistent?

I would really appreciate clarity on this. Thank you.