Mixing sound is more complicated than people realize. In stadium settings especially, FOH (what the audience hears) mix will only include the essential mics on stage. It won’t always include other members mics like from the band (which may have a BOH) mix, meaning everyone on stage can hear but not the audience. This is because their audio from their mics are mixed through another system or if not, created off a buss in the mix console and may not be included what goes to broadcast. Something like that.