HM reach out directly. He introduce their team first and then ask questions about my research experience based on resume. Finally let me ask questions. The process is smooth and the interviewer is nice.

I Had two rounds of Interviews but after that i didn't get any reply from the Merck team since it took many days for the process,for first interview after the call from hr it took 15 days and after that again i got the 2nd interview after 10 days