Best answer by Jon
Short answer is Yes, there is a way to do it for AHV to a non-Nutanix ESX cluster.
It is an unsupported procedure, but we have it documented in KB 3059. You can get a copy of that internal KB from support by submitting a support ticket on portal.nutanix.com for NX or SX deployments, or submitting a ticket through your respective OEM for HX or XC.
If this was AHV > Nutanix ESX cluster, you'd have a much easier method to do this, with cross hypervisor DR.