I must be missing something, because I hope this is still a thing. In every other Halo and any other competitive shooter, your hud displays who, if anyone, is speaking as well as if you’re sending voice chat audio as well. For instance in Halo 3 it was display on the bottom right. In Halo 3 for instance it was on the bottom right.
Makes solo queuing into arena frustrating when you don’t know what teammate is calling out. Especially when it’s one shot my x.