ThousandEyes Senior Software Developer interview questions

I had a call with a recruiter after that I had a coding phone screen and lastly panel interview of 4 sessions consisting of coding, system design and behavioral etc. The phone screen interviewer was really full of himself. He literally spent half an hour just talking about the work he has done and how he is re-writing his whole team's project. Then he only gave me 15 minutes to do the coding question. 5 of which was just used understanding the question so, I was only given 10 minutes to code. While coding he was pretty unresponsive to my questions. Not the kind of person I would like to work with anyway.

The process was very smooth and efficient. A call with recruiter and an initail screening with one of the engineer. Nothing to say about the good process and all the people I have spoken they were all very friendly. I am a bit disappointed though as I thought the interview went well and yet I got a generic rejection email. I have read in other glassdoor reviews that they seem to be perhaps a bit too selective by rejecting also candidates that performed reasonably well.