MN just hates Iowa in general. No real good reasons. IL is mostly about Bruce Pearl. They are not Duke because of Bruce P. Sure was fun when Iowa and IL took turns shredding each other in FB especially since Iowa had the upper hand mostly. When I lived in MN, the locals were so serious about everything. The Iowa Expats had a good time which drove them nuts.
MN hates Iowa because the Hawkeyes have taken over the Metrodome and their new stadium multiple times (among other reasons).