Probably not multis, but definitely know each other, as they are playing in almost all their games together.
In Game 11805127
, they are arguing about why one attacked the other (in Dutch and not English):
2012-10-17 08:01:15 - Bramus: Maurits if you are going against me ill take your oceania
2012-10-17 11:49:09 - NaFuckingPoleon: sorry hugo ik heb perongeluk madrid verovert
(this means "I accidentally captured Madrid")
2012-10-17 12:30:51 - Bramus: madrid was mine....