Apple Physical Design Engineer interview questions

For Co-op, HR contacted me through mail, First round was Technical Interview and I am waiting for further response there might be further rounds but I am not sure about them because I didn't receive any further information till now

I was reached out through LinkedIn, had a phone screening call with HR, and spoke to the Manager for the first round. I was asked about timing, PD flow, routing techniques, low power techniques, and the projects listed on my resume. Next was the technical round where I was tested on all stages of PD. I did not get the job but the HR called to provide feedback and encouraged me to apply to other teams that might find me a good fit.