Texas Instruments interview questions in Dallas

I had an telephonic interview on November first week,though I thought it went well, 10 days later I was told that I have not been selected. 1 month after this I was called by the manager and was told they want me to be interviewed 1 week later and they will send me the schedule I was amazed but was happy that I have a chance, 2 days passed but wasn't given any schedule, there was lots of ups and downs during this interview. As I was promised for schedule which I never got instead I was told that I have to present something/anything 3 days before, which I prepared hurriedly. Interviews were very good and all the interviewers were very nice and friendly. Except the presentation, I feel everything went good.

Applied online after receiving an email that this certain job role would fit well with me, based on resume uploaded. First round was a group phone interview and the interviewers were very nice and made you feel very comfortable. Pretty much talked about everything that was on my resume. Second round was an all day on-site interview. Consisted of 2 group interviews, a technical presentation, and a group project. The group interviews were mostly behavioral and delved in to the experiences put on the resume; the presentation lasted about 15 minutes. The group project was a time-constrained, materials-constrained design project with a team of 6 other candidates.