Yes, you can send the aux output from your Google Home Max to all your devices. Here's how to do it:
- Connect the Google Home Max to your device with an AUX cable.
- Turn on your devices one by one and select the Google Home Max as the source.
- Once the Google Home Max is set up with each device, you can use the volume and equalizer settings to adjust the sound coming out of your other devices.
It may help to connect the Google Home Max to one device at a time, as this will make it easier for the rest of your devices to connect.
For more information, take a look at Google's help page on setting up an aux connection with the Google Home Max: https://support.google.com/googlenest/answer/9213332?hl=en