Converting from xcp-ng to Proxmox

In the true spirit of homelab. I am trying to run Proxmox as a guest on xcp-ng, as an exploration on how to convert from one PV environment to another without using a new separate VM host.

I tried to do this when converting from ESXi to xcp-ng, and found it to be impossible.

When I install proxmox as a guest VM, proxmox itself seems to operate, but I can’t get VMs to start. It just hangs at the BIOS screen.

Yes I have nested virtualization turned on for the proxmox vm.

Any ideas? I am happy with xcp-ng, but felt it would be a good idea to get some experience with Proxmox since I also have some with ESXi and HyperV. Want to round out my knowledge.

I do have another machine I could use for this, but it is actually performing a useful function right now, so I just want to run Proxmox as a guest on xcp-ng for play, NON-production use.

Nobody ever try this?