If im correctly you like to hear your daw over your headphones and your self when doing a voice over. At that time you like to mute your main speakers.
When done you like to switch back to monitors.... Right?
I bed your headphones output is linked to the outputs 1/2 just like any other focuarite product.
What if you copy the output in your daw/ program?
One daw output to 1/2 ( your headphones) and one output to 2/4 ( monitors)
With perhaps with a solo setting on your headphones ouput channel you could kill your monitors while recording.
I'm not shure if your program provides this option but it is nice to check this.
Never has isues with this.
Strange that you can do everything... But when it comes to explaining you don't know how ti
Btw i'm not familiar with the program twisted Wave....