I just had a campus visit, which went well. I sent out a thank you note to everyone I met, but didn't receive any responses at all, nothing. Is this unusual? Bad sign? Trying not to read into this too much…
I feel your anxiety (I was just there last year), but it is completely unwarranted in this situation. I am on the other side of interviewing now and had two candidates send thank you notes. I didn't respond to either one of them. I really liked both candidates. It means nothing.
It says more about them than it does about you.
maybe they agree that they don't respond to thank yous
or rarely get them and aren't sure what to do
or just busy with the end of semester, prepping for the next candidate, making their decision (and who knows how unified or contentious that is) etc.
or this reflects a general lack of consideration in the department - it is possible to reply to a campus interviewer with a very neutral "It was good to meet you, thanks for your visit!" kindness is rarely a misstep. academia is a small world.
whichever it is, your situation is exasperatingly the same - waiting. how are your holiday preparations coming? how's that great research you are working on? what did you do today to make yourself happy? :-)
juniorfaculty's comment is spot on. At one place I was on multiple searches. HR had very specific guidelines for all communications with candidates to adhere to their EOE policies. Don't fret over it. It also reflects very little about the department or institution.