1.Aptitude 2.Interview Almost all interviews follow the same structure, regardless of who conducts them. Depending on the type of interview being carried out, however, the time may vary from 25 to 50 minutes. At Ernst & Young, a full interview will typically consist of two back-to-back, half-hour interviews, each with a different Ernst & Young representative. Ernst and Young Interview is typically divided into two sections -Technical and HR.