Well Jan Duwe of Behringer finally decided to give some insights to the "Dan Dugan like" method used in the XR series. It is claimed that it is a gain based method with modification and bugs. It's sad that so much prodding is required to finally get a glimpse of what should have been a great selling point for the XR. I bought mine regrettably for just that reason over a X32 rack. Yes RR the software and customer support sucks.
Jan also admits that he never used "Dugan" in the advertising, so what is this from their web site?
"Revolutionary Dugan*-style Auto-Mixing automatically manages microphone gain sharing "
Nothing more than the classic marketing scam of misleading product branding.