Wireless connection to PC is not able on GoPro by itself, but you can stream on Twitch trought Quik app if you are GoPro subscriber. Not sure if you can use various cameras, but on the following link the process is explained:
To connect one camera to your PC as a webcam, you have to install the GoPro Webcam desktop app, but I never tried with more than one camera and I don't know if it's compatible with Twitch.
Another way to connect your GoPro to a PC or TV is trought Media Mod or GoPro older mic adapter (Media Mod is higly recommended), wich has an HDMI port, but not sure of how you can send the signal wirelessly to your PC.
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