I recently bought a Nintendo Switch. I prefer to play on large screens, which is why I have connected the switch to one of the monitors connected to my PC. Now I would like to hear the audio from both through headphones at the same time. So far I have only found the Y-connector, which has an audio and microphone connection.
Is there such a connection that combines the two audio signals into one, or is this not technically possible?
So the first thing that comes to mind is a mixer. A small 2-channel mixer with cross fader is enough.
You shouldn't do that, it can damage both or one device.
What is that good for?
A switch with 2 inputs and one output is better.
What do you want to hear at the same time?
I can't really follow your question, but it should be possible with a mixer
http://www.dynavision.de/img-stageline-mmx-11usb-2-kanal-audio-miniatur-mischpult.html