Sage interview questions

After an initial screening phone call with HR (15 minutes), I have been invited to a second call with the SEO managers where I was asked specific questions about XML sitemaps, hreflang tags and robots.txt (roughly 30 minutes). After passing these first two steps I have been invited to a face to face interview where I had the chance to meet the team and the managers for about 2 hours. A week before the interview I was asked to provide a Powerpoint presentation about SEO technical issues mainly involving international SEO. Due to the level of analysis requested, the deck required several hours of work to be completed. After weeks of silence, I have been notified by email by an HR representative that my application had not been successful (without any more details). To date (several weeks after the last email), I have not received a word of feedback.