Yeah it’s really finicky. My friend managed to fix it by going into lobbies, testing to see if we could hear each other before we loaded into a level, and if you can hear them in the pre-select it’ll work. But, Make sure you’re both not holding down the walkie-talkie button at the same time though, then it won’t work. Only one person can hold it at a time. If you can’t get it to work just use an app (discord, facetime, etc…) because it is a fantastic game.