I seem to recall that Rodgers and Brees worked out a lot together when Rodgers was backing Favre. I think I read how much Rodgers respected Brees' work ethic, passion and professionalism. I think Rodgers aspired to the things Brees was doing.
All QB's want to outshine the other, and we know they don't play one-another, but I always think this one is of special interest, based on my limited knowledge.