Intel Corporation Process Engineer interview questions

I have applied for the position through a referral. It took me 1.5 months to get the first phone screen interview with the hiring manager. It lasted for about 30 mins and then she scheduled for the next rounds of interview with 2 group leaders in teams meeting. Those were 1 hour long and I had to prepare a 20-25 mins presentation of my graduate research work. It followed by few technical questions and mostly behavioral questions. It’s been almost 2 weeks since then and I am still waiting to hear back from intel (regardless of the positive or negative decision). I have even emailed the hiring manager to know their decision, but got no response.

Started with a phone interview with the hiring manager followed by three online interviews with two managers and two engineers in the position I interviewed for. After a few weeks, HR contacted me to make an offer. Due to Covid, I did not have an onsight interview.