Kong hybrid mode with kong docker and kong Kubernetes ingress

It is supported. Check screenshot below.

On the left panel, I was running control plane with docker, on the right hand side the DP was deployed on my local k8s cluster as you can see from the hostname.

You just need to make sure cluster certificate you are using on control plane and data plane are the same (if you are using shared mode) and your k8s data plane can talk to your control plane.