Cement Marketing interview questions

Applied via email per their posting. Was contacted by their HR contractor. Initial interview was over the phone and mostly rudimentary questions basically asking if I met the minimum requirements. Was contacted later for an in-person interview. Met with two of the head account people who asked a flurry of standard questions. Overall felt good about the experience. Was contacted a week later to have an in-person interview with the other copywriter. Again met with her and had a great conversation. Was contacted later that day by the HR contractor who said the other copywriter loved me and wanted to immediately move me to the next step which was a writing test. I waited over a week for the writing test to be sent to me but went ahead and completed it. Finally, after everything was sent I had to send several follow-ups to finally get an answer that they liked my materials but weren't 100% sure I was a good fit culturally. Overall, I enjoyed the process despite it being quite lengthy (about 2 months from my initial email till rejection). I guess my one complaint was if there was an issue with cultural fit why would they have me go through the writing test? Just left a bit of a sour taste.