I don't understand dragging the hiring process out....in any field, and I'm a huge culture/fit guy. I don't think it makes the hiring organization look good....you really need all this time to make a decision? What's business decision making look like for you?
I say this as someone that works for the federal government with a painful hiring process.
I did a phone screening with a guy two weeks ago, panel virtual interview with him last week, and flew him here from the UK this week to put a bow on things. We had drinks tonight to talk ancillary stuff (towns to look for houses, commutes, the non-work side of the process) and he'll come into the office tomorrow to talk nuts and bolts, potential project assignments, and next steps....it'll be a done deal by Tuesday and we will just have to figure out his start date with the move back to the States factored in.