Meta Product Manager interview questions

I was referred for a job at Facebook by two employees. Almost immediately, I got an email from a recruiter asking for my resume. I sent it 20 minutes later and then didn’t hear back for 2 weeks. After checking in with them, I finally got connected to a scheduler. I know FB gets a ton of applicants, even ones who are referred, but this is where it started to feel like FB was inconsiderate of my time and unresponsive. The scheduler would ask me for some times over the next 1-2 weeks, I would provide them within a couple of hours, and then I wouldn’t hear back from the scheduler for sometimes 10 days. At which point, all the times I provided got filled up. This went on for 3-4 rounds before I finally stopped it.