i also remember back during 3.X i was running 8v8 feast matches and got matched with a dualboxer double blm, they would move together in perfect sync and get double fire IV combos. you could say its 2 ppl in sync, but they moved around in follow and would perfectly cast at the same time during the whole match, i opened a ticket back in the day, and the GM said dualboxing would be using a third-party program and so not allowed. never got to know what happened to them tho, as they would "investigate the issue"