[lcnPylGDnU4H9OF]

It sounds like a setup where applicants hire some third-party company to perhaps "represent the client" in the interview and that company hired a bunch of people to be the interviewee on their clients behalf. Presumably also neither the company nor the applicant disclose this arrangement to the hiring manager.

[yosito]

So, another, or several more, layers of ethical dubiousness.