Boston

I am a Spanish language interpreter. I interpret zoom meetings/webinars through a headset. I raise and lower volume on my headset or through the computer keyboard as needed. I don’t use zoom volume settings. Recently I zoom interpreted a live event in another city, which had a sound technician on-site. The sound was inaudible. The technician made adjustments which resulted in the sound being incredibly loud and impossible to turn down on my end. I could turn down in headset or on keyboard straight past the point (and icon) of silencing, and it remained loud as ever. Any thoughts or explanations ? Thank you