Applied online in early January. Contacted early March to do a self paced video interview which was very straightforward and took no longer than an hour. Contacted a week later to set up an in-person interview in Chicago for which they took care of my flights. There were four interviews - Fit, Case, Behavior, and Excel. Nothing particularly tricky, mainly just talked through my resume in each interview. The case interview was not quantitative so required no math, and the Excel test did not require any complex formulas. Never heard back.