Generally speaking, the provisioning depends greatly on the infrastructure being requested as well as the current demands placed on the underlying cloud infrastructure provider.

For smaller deployments, you can expect a 5 to 10 minute timeline. For a setup more aligned with a high-volume system with large CPU and database capacities, you can expect a provisioning time of 20 to 45 minutes.

Yes, you could connect one FusionAuth to another using an OpenID Connect Identity Provider or SAML v2.

Seems like the library I used is opinionated. Thanks for the hints.

yeah, pretty simple really, if you want to try it yourself before my tutorial is out, try using the hasura cloud + Auth0 tutorial on Hasura's site, and use the lessons from that to use it with fusionauth.