If you had a 3.5mm type of headset this could be done with an RCA audio combiner.
Since you have USB this becomes much more tricky.
If the headset software/driver supports it you can connect your PS4 to PC and hopefully it will output both sounds but again that depends completely on your headset and motherbaord audio software.
If you had a 3.5mm type of headset this could be done with an RCA audio combiner.
Since you have USB this becomes much more tricky.
If the headset software/driver supports it you can connect your PS4 to PC and hopefully it will output both sounds but again that depends completely on your headset and motherbaord audio software.