Interview process took almost 2 months before finally getting a rejection last week. It included a screener interview, talking to two different people (several weeks apart), preparing a case study, and presenting the case study to a group.
The process was often longer than 1 week between updates, and ultimately the rejection sent is an automated one after spending weeks of time preparing for interviews, including one interview that was scheduled for the next morning sent out at 3PM the previous day.
The people themselves were great to talk with, but the process was long, grueling, and the time between updates to find out if you were moving on was way too long. The hiring manager informed me that eBay often moved very slow on interviews because of how many high quality candidates they invite to interview for each role.