Symbolic of…something

I just got home and started bringing bags/equipment crates inside.  A turned to put my new CSUCI (aka CIinCI) hat on our hat rack and what did I see?  This:  

To the left is either my son’s or wife’s Koru Cafe hat we got last year and to the right is my “old school” CSUCI hat from circa 2006.  I think this symbolizes something, but I can’t quite figure it out in my exhaustion/unpacking stupor.  

I welcome interpretations of said hat rack.