Automation not firing on amp Zone 2 power command

Third party integrations
,
1

I created this automation to turn my speaker zone selector on when Zone 2 of my Denon amp is turned on. Unfortunately, it never fires. Can anybody explain why? I’m initiating the power on through the mini-media-player card and the default Denon integration. I have an “off” version of this that fires consistently in response to any power command. History shows the power event, but could it be because the automation checks the status while the amp is in the process of powering up and it isn’t fully on when it checks?

alias: Zone 2 On
description: ""
triggers:
  - device_id: b694f7753e8d08c119a1ea474cf3218d
    domain: media_player
    entity_id: f2c397613ffc995657193745553e2f44
    type: turned_on
    trigger: device
conditions: []
actions:
  - action: remote.send_command
    metadata: {}
    data:
      num_repeats: 1
      delay_secs: 0.4
      hold_secs: 0
      device: Aton
      command: "on"
    target:
      device_id: 4677185f9c852caa23f1786a11435855
mode: single