Hiring manager reached out and coordinated the full process. No contact with a recruiter / HR throughout. I thought that was interesting and created a stronger relationship. However, after the hiring manager arranged all the interviews including 2 panels, a 1-1 and a take-home presentation / analysis, I proceeded through all of them and then was ghosted. After so many hours of meetings and preparation, I was surprised there was no feedback, either positive or negative. I would have been fine with a rejection and a brief sentence or two of feedback considering the journey I've made and the fact that it was with a hiring manager, not HR / recruiting who I'm sure fields hundreds of such emails a day.