Epic Software Developer interview questions

Phone interview for 45 min, 20 mins he asked me questions, 25 mins I asked him questions. Thought the interview was ok. ProctorU exam took me the full 3 hours. The programming section was challenging - 5 programming questions which in my opinion got increasingly harder. I actually skipped one lol. The other sections were ok though! But I do believe this is why I didn't get an offer.