The process took two weeks from the initial phone interview to receipt of the offer, although this may depend on what 'tier/wave' they placed me in (that is, they may have invited me to the first phone interview after they had considered other candidates). Feedback after the in-office visit, however, did suggest that all the 'waves' were consolidated into one interview 'superday'. Not sure if this is typical, it was certainly not intentional, but rapport developed with the interviewers resulted in my leading the structure of the interview. Tried to relay every answer back to 'why this firm (& what distinguishes them)', 'why this practice and why I considered myself a good fit for this role' etc. I recommend you use your concluding questions to differentiate yourself and to leverage as another talking point (my intent was to keep the next interviewee waiting!)