Q: Play music on another device while docked?

Hello MarkForceOne,

It sounds like you want to have the iPhone playing music in its dock and also play music at the same time on a bluetooth device. The phone can play audio through one source only, either itself, headphones, or a bluetooth device but not multiple at ones. To switch between them see this article:

Set up and use third-party Bluetooth accessories

Play audio to a Bluetooth accessory

If you want to play audio to a Bluetooth accessory, you'll need to select the accessory.

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