BitTitan Marketing interview questions

Applied on career site. Phone screen with recruiter going over basic job requirements, followed by a 45-1hr interviews with hiring manager and director of marketing. Both were amazon leadership style interviews. STAR format, tell me about a time..etc. After that, brought in person for a 6 hour onsite with 7 people across the org including sales and VPs. Same as phone interview, it was very amazon leadership principle-y. They have their own versions but its basically identical. After the onsite, a take home marketing assignment. The interview process was transparent & easy up until I turned in the take home assignment on a Tuesday. I followed up that Friday, and was told they were deciding between me and another candidate and would reach out on Monday with their verdict. After that, never heard from them again. An extremely unprofessional end to a month long interview process.