Schweitzer Engineering Laboratories Associate Software Engineer interview questions

Applied online and recruiter reached out for an HR screening followed by a discussion with the hiring manager(90mins). Then a 24hr take home assessment(2 questions). Then after a long gap I was invited for technical panel interview (1. with a director, 2. with team members(leads) 3. with team members(lead + arch)). Basic programming questions, data structures, a lot of OOP and design patterns. More questions on the take home assessments, choices I made during implementation and trade-offs, etc. They move slow and the interview process took a lot of time with gaps in between. I had positive feedback, but ended up receiving a automated rejection after the interview and no feedback on why I was rejected.