I'd like to know how would traffic be routed if I have the following scenario:

• Kubernetes cluster DEV with Ingress Controller resolved on: *.dev.abc.com
• Kubernetes cluster MAIN with Ingress Controller resolved on *.abc.com

My questions are regarding these situations:

1. What if I deployed an application on BOTH k8s clusters with ingress app.dev.abc.com? Would route53 resolve to cluster DEV or cluster MAIN?
2. What if I removed the application from k8s cluster DEV keeping all the other setup the same? Would my requests be routed to cluster MAIN? If not, can I do something so that this happens?

I don't have the means to test what would happen in these scenarios, so I'd like some insights whether or not I should pursue the plan I have in mind.