CoBank Manager, Process Management interview questions

Had an initial call with the Recruiter, Then a 30 min video call with the Hiring Manager, then came onsite for 2 hours of in person interviews. Was all perfectly normal, moved quickly through the process. Then they completely ghosted me. No response to my many e-mail follow-ups, no word on the position, for three weeks. I guess I'm just waiting for the HRIS system to send me a robo-email someday. It's seems pretty unprofessional to not communicate in any way to someone you did in-person interviews with...