I will pop out the decibel sound meter app on my iPhone to get a quick visual and that often helps explain differences I hear room to room quite a lot.
So the sound level is the only possible difference in sound between rooms? 🤦♂️😳🤦♂️🤦♂️
I was at the show the whole day but I saw no people pulling their decibel meters out of their pockets or oscilloscopes.