Bluetooth audio should not be affected by Unicorn HAT since it doesn’t use the onboard PWM hardware as a DAC. It’s all-digital until it reaches the bluetooth audio device (as digital as waves through the air can get anyway!) where it’s then converted via a DAC into audio.
Thanks for the pinouts, love (seeing all those boards, with pinouts, so excellently documented, is like being in a candy shop https://pinout.xyz/boards ;-) ),
I meant Unicorn pHAT, not HAT - so I guess the answer is YES, and it’s trivial from a pinout point of view…