I wrote to UW Madison's PhD program coordinator to know if all interviews took place on 01/15 and his response was:
"We did have a visiting day last Friday but it was not required that all faculty participate. That being said, I noticed you applied with [PI's name]. He normally receives somewhere around 150 applicants. I just want to be honest about the competitiveness of his lab."
I knew that it was a very competitive lab and that my chances were very low, and maybe he's giving me a hint that invites might have gone out already for this PI? Not sure what to think but I think I can cross this one out ?