Faculty hiring after campus interview
It is most helpful to think of the faculty hiring process as a black box. Decisions get made according to some opaque process of which only a small amount of detail is revealed to you, the candidate. But the bureaucracy of a university, and the dynamics of a job search involving multiple finalist candidates, are complicated, so the reality on the ground can involve a lot more that’s going on than what you are being told. I don’t mean a lot more necessarily bad stuff, or a lot more good stuff - just in general more people and more decisions (some perfunctory and some that are more uncertain) on which the outcome depends. Some of those decisions can be purely logistical or financial in nature (or even political) and quite far removed from the question of whether you are “good enough” to get hired by university X.
The bottom line is, if the department chair is competent then they have likely shared the maximal amount of information they can reasonably share with you at this point without risking misleading you into believing the outcome will be either better or worse than it might end up being. The only thing that’s reasonably certain at this point is that you’re still a viable candidate. For anything else, you’ll have to wait for the black box to do its thing. Good luck!