CNAME from customer to cloudflare domain

I have a cloudflare domain and I want to route the traffic from customer domain (outside of cloudflare) to my domain in cloudflare so that I can run some workers and CNAME it to some service in customer domain to route traffice through CF.
I have added a dns record in cloudflare subdomain ( as customer-qa that is CNAME to, I have also added another Route53 dns record that is CNAME to and . If I access this setup works fine and I am able to access

Now if I create another dns record in Route53 like CNAME to the dns resolution does not happen. I am not able to make sense of it. Is there any explanation for this.
Note: both and are owned by us and are in cloudflare.

This topic was automatically closed 15 days after the last reply. New replies are no longer allowed.