Well, as you said you had 2 MCs in same city/spawn so yea it's against rules. You were running 2 MCs at at Hive in train and 2 at Carnivoras.Today i was banned by Havoc on all my characters (4 mc) for reason 'mc limit'.
The problem is, that only 2mc work in the same city, another two in completely different cities but i got banned on all 4...
c) It is prohibited to use multiple clients on one spawn, hunting or cooperating on bot/follow.
Result: 2 days ban on every character logged in from IP adress.