Often, if the interview lasts significantly longer than its allotted time (typically 30 minutes) it is a good sign. This is especially true if you are interviewing with a relatively senior banker. Another good sign is when the banker with whom you are interviewing ceases to ask you questions and starts telling you about the benefits of the firm. This is known as switching into “sell mode” and generally indicates that the banker thought highly of you and wants you to work there. A third potential sign of interest is if you are asked with what other banks are you interviewing and how far along you are in the recruiting process with those banks. Finally, it generally indicates a good interview when the interview feels more like a conversation than a formal question and answer session.