Is there an adapter or something that can act as an external antenna if I want to use bluetooth headphones?
I am picturing something that would plug into the audio jack that would be a flex antenna hanging off the jack.
No.
Is this something that could be made (maybe in the works already) for those of us with this situation or would it not work?
It won't work.
Why's that?
Because the notch that activates the radio/antenna also reroutes output to the headphone jack.
If I plug in a pair of headphones and turn on bluetooth, will I receive audio over the bluetooth?
No
Adapter or plug for Radio function with bluetooth headphones
