It was a long process, mediated by Randstad. Two weeks after my application, I received a call from Randstad checking basic information. Another two weeks after that, I received an email of Randstad with the same questions. One week later, Janssen contacted me for an interview for few weeks later (almost 2 months from the application date until the interview). The interview was quite nice, and the interviewers kind and friendly. I didn't receive any feedback after it, I think the position offered wasn't a good fit in the end (the internship description was not fully clear, or I didn't understand it properly). I would apply without problems for another position that fits me better after all.

Virtual interview and then panel interview and then received a call with offer about a month later. Nice streamlined process. Might take some months to hear back for panel interview though.