Multiple NICs with ethernet preferred over wifi but both operating

gistfile1.txt

network:
  version: 2
  renderer: networkd
  ethernets:
    enp2s0:
      addresses: [192.168.15.2/24]
      routes:
        - to: 0.0.0.0/0
          via: 192.168.15.1
          metric: 100
      nameservers:
        search: [mydomain, otherdomain]
        addresses: [192.168.15.1]
  wifis:
    wlx0013eff10948:
      access-points:
        "the-network":
          password: "the-password"
      addresses: [192.168.15.2/24]
      routes:
        - to: 0.0.0.0/0
          via: 192.168.15.1
          metric: 200
      nameservers:
        search: [mydomain, otherdomain]
        addresses: [192.168.15.1]