Contacted by a recruiter. Phone interview #1 with HR, phone interview #2 with hiring manager; onsite panel interviews (four of them over the course of 3-hours). First of four panel interviews was with four engineers who seemed to be "gang-tackling" me - often two or three of them talking and asking questions at the same time. Learned later from the recruiter that I was criticized for "interrupting." Ironically, it was the only way I knew to help bring order to an out-of-control interview process - there's no practical way to listen and respond to questions being asked by as many as three different people at the same time.