No Kong listen with the requested protocol is configured - when using TLSRoute

Questions
1

Hello,

I am trying to expose a Postgresql instance configured with TLS using Kong Gateway API and a TLSRoute. However, the gateway reports the message from the subject, and searching the documentation shows that I need a “service” and a “proxy” configured. Is there a working example of configuring Kong with gateway API for a TLSRoute?
The Gateway and TLSRoute are configured via Ansible:

- name: Add cnpg-tools Gateway
  kubernetes.core.k8s:
    wait: true
    state: present
    definition:
      apiVersion: gateway.networking.k8s.io/v1
      kind: Gateway
      metadata:
        name: cnpg-tools-gw
        namespace: cnpg-tools
      spec:
        gatewayClassName: kong
        listeners:
          - name: postgres-tls
            protocol: TLS
            port: 5432
            hostname: "cnpg-tools.{{ cluster_name }}.{{ default_domain }}"
            tls:
              mode: Passthrough

- name: Add cnpg-tools TLSRoute for our instance
  kubernetes.core.k8s:
    wait: true
    state: present
    definition:
      apiVersion: gateway.networking.k8s.io/v1alpha2
      kind: TLSRoute
      metadata:
        name: cnpg-tools-tlsroute
        namespace: cnpg-tools
        annotations:
          external-dns.alpha.kubernetes.io/hostname: "cnpg-tools.{{ cluster_name }}.{{ default_domain }}"
      spec:
        hostnames:
          - "cnpg-tools.{{ cluster_name }}.{{ default_domain }}"
        parentRefs:
          - name: cnpg-tools-gw
            sectionName: postgres-tls
        rules:
          - backendRefs:
            - name: cnpg-tools-cluster-rw
              port: 5432

Thank you!
Stefanita Vilcu