JP1 Remotes

Our Samsung QE65Q9FN has PIP 'Picture in Picture' and it would be nice to get the sound for one of the pictures from tv's speaker, and to get sound for the other picture from headphones.

There is no option like this in the tv's settings, just that to choose which sound track is to be played through the tv's own speaker.

Is there any method or gadget for this to be realised please?

I can't imagine that such a thing is possible, PIP was created just so that you could keep an eye on the other channel and switch back to it when something changed, like the commercial break was over or something like that.