Process was a 30-min recruiter screen, then a 30-min peer screen, followed immediately by a substantial take-home case study: analyze data and produce a written memo, due by end of day the following Monday (effectively a weekend deliverable). After investing significant hours on a company-specific business problem, I received a generic rejection a week later with no specific feedback, despite positive signals from both interviewers. The role was reposted shortly after.
My advice: time-box the case study heavily, and don't assume the depth of work requested reflects where you actually stand in the process.