Where to start for walkie talkie?

How in the world does one make a walkie talkie that can pick up all sounds in game as well as the player’s voice and play it at another location (another walkie)? I have been researching and have not found any ideas for achieving this. Any ideas are welcome! I just need a step in the right direction.

Hello!
To create a walkie-talkie system that transmits both in-game sounds and the player’s voice to another location, capture the audio using a microphone for the player’s voice and software like Virtual Audio Cable for in-game sounds. Mix these audio streams using OBS Studio, encode the mixed audio, and transmit it over the network using protocols like WebRTC. On the receiving end, decode and play the audio through speakers or headphones. This setup involves audio capturing, mixing, encoding, network transmission, and decoding for real-time communication.

Best Regards,
labcorp patient portal

Thank you for the response! A lot of that I have no idea what it is but I will try my best!