It seems that Cloudflare does not support its load balancer pointing to a Cloudflare worker. We would like to distribute traffic between 2 CF worker scripts. It is solvable by writing a 3rd worker script that forwards the traffic, but I think it should be possible with the Cloudflare load balancing feature.
What happens when pointing the Load balancer to a Cloudflare worker address: Error 1000
DNS points to prohibited IP - You’ve requested a page on a website that is on the Cloudflare network. Unfortunately, it is resolving to an IP address that is creating a conflict within Cloudflare’s system.
Possibly a feature to consider?