CIAA conference play has 5 division games and 2 cross overs that rotate on a 2 year bases. This is the second year of the current rotation so that's why WSSU is playing VUU and Bowie again this year. Next years cross overs should be different.
Outside of that some CIAA schools schedule each other for OOC games, but the conference doesn't take that into consideration when scheduling the future rotation games. WSSU and VA Union actually had a home and home nonconference agreement for 2016 and 2017. So with the non conference agreement and now the mandated rotation that is why WSSU and VA Union are playing for the 4th year in a row.