There is/was? an exploit for the Chimera fight 2 where the leader would somehow restrict themselves from entering; then the rest of the party would enter. Allowing them to fight Chimera w/o it ever going into Voice spam mode. I believe the leader set the duty finder to a different dungeon but then entered the instance causing him to stay outside. The leader i did the fight w/ seemed like he was full of bullshit when the fight was won w/ no voice attacks used; brushing it off as if he missed out on the win w/o a care in the world. I wonder if SE is aware of this exploit also.
I also had the AK duty finder up seeking a pt when i needed the AK part of the relic quest and i joined a pt that had just won it and i recieved credit and the seal eventhough i didnt clear the dungeon at that time. This game is full of holes lol. Maybe if they actually let us test it more these wouldnt have existed.