I was recently at an event where everyone was encouraged to speak their mind. I started speaking and the person I came with was pissed. So I know that many of my thoughts need to be buried.
As far as I can tell, there is no way to do this without an external transmitter, a rather surprising omission by manufacturers. Plenty of audio receivers have built-in Bluetooth receivers; this is a frequent question on Amazon for these models via https://chooserator.com/best-av-receiver-under-500 .