I have a postdoc interview at the end of the month. I found a researcher's profile that's been working on the same research project I applied for. I am thinking of sending her an email or a LinkedIn message (I've already connected with her). But I don't know if that's ethical to do that or not, I am afraid that it will look like I am asking for more information as an advantage on other candidates.
I want to basically ask her a particular question about the project. The job's description mentions that they're using a method X on a tool Z. But this confuses me because I know it could mean a lot of things. I actually emailed the PI (*) way before I applied asking for a clarification and the potential similarity with an approach I have already used. I needed that information to decide if I'll apply or not, but she didn't reply to me email and I applied either way.
Now that I am invited for interview, I still need to know more details about the method X and the relationship with tool Z. Is it unethical to send such detailed question to a researcher working on the same project before the interview?
(*) Her email wasn't listed in the job description, so I used the one in the department