Yes, it's definitely a shibboleth. IMO it's a full duplex signal. When I notice that an interviewer noticed, it can make me more interested in an offer from t

Yes, it's definitely a shibboleth. IMO it's a full duplex signal. When I notice that an interviewer noticed, it can make me more interested in an offer from that place if I think I'll be working with that/those interviewer/s.