It would appear from the RopieeeXL > DLNA settings tab that you have to chose between HAT or USB for output, though this post from 2019 suggests that it is (or was) possible. I have a Digi+ connected to digital speakers and a USB DAC for headphones. It would be great if the DLNA output could go to both at the same time. It doesn’t seem to work for me (Topping DX7Pro+ and Digi+ HAT). Please don’t ask me to use Roon.
I’m pretty sure it is dependent on the control software you use.