Edelson Associate interview questions

I sent an application to the posted email address. They wrote me a few days later asking to interview me, but when I reached out with suggested times, they never responded. Had to circle back multiple times before I finally got something on the calendar. 20 minutes before that scheduled interview, they cancelled. Finally managed to interview with them the following week. Fairly standard screener interview. About 40 minutes. Never heard back. Overall, I thought the interviewing experience was rude and unprofessional.