ACM certificate validation pending with Route 53 hosted zone with parent domain in other DNS service

Hi, I'm trying to validate a public certificate requested from ACM with CNAMEs dev-application.customer.com and *.dev-application.customer.com.

In this case DNS-name customer.com is registered outside of Route53. I created Public hosted zone on Route53. For certificate validation I was able to add records to Hosted zone with AWS Console, after few hours validation is still pending.

I'm able to make http-requests to dev-application.customer.com after adding IP for one of mentioned NS-records into my /etc/resolv.conf. Without this dev-application.customer.com can't be resolved.

Might that actually be the reason why certificate validation is pending - ACM's doesn't resolve the hosted zone as it isn't available at customer.com DNS?