How can I composite Eevee and Cycles together in one animation sequence? I have a character model that I’d like to render in Cycles only and the rest of the scene in Eevee.
This was suggested to me by someone I had contacted sometime ago.  He said to speed up render times, they’d render their characters in cycles and the rest in Eevee but I cannot remember where I spoke with the guy, otherwise I would ask him how he does it.
I’ve searched the internet but all I’m finding is that it’s not possible to composite Eevee and cycles together.
There must be someway to achieve this!
Does anyone have an ideas how this might be done?
Organize your outliner like this:

Add a scene and select Linked Copy.

I'm calling mine Eevee.
Set up Eevee scene's outliner like this:

In the Eevee scene, set up the shaders of the objects in the Cycles collection like so:

Be sure to set the Blend Mode to Alpha Clip (unless otherwise necessary).

Back in the Cycles scene, set up the compositing something like this:

And be sure to enable transparency in the film settings:

When you press F12, both scenes will render automatically.