Shift Technology Fullstack Developer interview questions

One technical assessment (coding challenge) followed by 3 x 1.5 hour interviews: initial screening with HR, two technical interview with a back-end and a front-end focused developer. Everyone was friendly and professional. The interview process itself seemed well-organized. Received a 4-line email response in the evening of the following week. While the company communicated the decision promptly, given the length of the interview process, I was hoping for a more detailed feedback.