Meta Product Manager interview questions

it was a 3 week process, including 4 interviews in total (one with hr). the 3rd round included one case study to solve which was quite difficult. last interview with head of department

Recruiter screen call, Product Sense video call, Execution video call. The interviewers were a mixed bag, some bright and engaged, others appearing to be just waiting for it to end. The recruiter couldn't have been less interested, emailing me the materials to prepare for my interview after it had taken place. No follow up to ask how the 4hr long process had gone. Rejection was done via email template, they have a "no feedback policy", which is super helpful.