Bank of America Sr. Software Engineer interview questions

Got a call from project manager and he immediately scheduled technical interview. Another round was from manager himself on second day and focused on more on understanding current roles responsibility, kind of work they and few technical question. I really appreciate efforts from manager. Now bad part will start, you have to follow up with manager to get call from HR. I received email from HR after 15 days to share some details and than we never discussed about expected salary she kept saying that your expectation is high but never mentioned what they can offer. And after 20 days, I received email that after through consideration of your provided details, we can not offer. Overall managers are too good but HRs keeps you waiting.

Technical Discussion ( including Logical\Analytical Questions), On Site Team Discussion and then HR Discussion. C# - What is Interface and it's uses Analytical - no. of squares of all the dimensions(1X1, 2X2, .... 8X8) in a chess board and generate the formula