It's usually the standard person Replying All, telling the original person not to use Reply-All, followed by multiple other people sending the same message to the other people who Replied All ... until eventually a very senior person tells everyone to act like adults and the chain dies :)
It's usually the standard person Replying All, telling the original person not to use Reply-All, followed by multiple other people sending the same message to the other people who Replied All ... until eventually a very senior person tells everyone to act like adults and the chain dies :)