Autodesk Developer interview questions

I was called by someone from HQ - from London I guess. Then I had a full day interview, an online test, then we had a launch break, then the main interview

2 rounds of interview, one in person and one coderpad.io interview. After the second round interview, a recruiter reached out to schedule a phone call. I sent him my preferred time and the recruiter replied with "Sure". When the time was up, I waited by my phone for 30 minutes and it never rang. I understand unexpected things happens. So I emailed the recruiter to schedule a different time, but I received no response. The recruiter just ghosted me. Overall, PlanGrid engineers were pleasant to talk to. But the HR was very unprofessional.