No response after sharing availability for interview

I’m interviewing for a role, 1st round went pretty well (derailed to talk about hiking, offered to connect me with an important industry person, said ”this is a really good conversation”, took tons of notes etc).

Almost 2 weeks after round two (on tueaday) I get a LinkedIn invite to connect and then a message from someone senior in the department asking to chat. I assume this is round 3. I state that I’m available Thursday Friday and Monday.

So now it’s Thursday morning and so it’s been 2 days and still no reply. Has anyone had this happen before? My message was just left on seen after I replied pretty quickly.