Texas Instruments Rotational Program interview questions

There were 3 stages of the interview, pre-call screening, interview with managers, and finally the head of the finance f2f interview. During the 2nd stage, there were a bunch of technical questions, most of which requires critical thinking. The 3rd stage was basically a small talk with the head consisting most of personal questions about ourselves. However, after finishing the final stage, I was continuously delayed by HR regarding the result. It took about a month. I don't think TI is seriously considering hiring anyone for this role. All the technical questions were asked in 2nd stage and if the answers were not good enough, they should just end at stage 2. I believe I have maintained a friendly and good attitude during stage 3. Did not receive any constructive feedback from the effort put in the job. DO NOT APPLY TO THIS JOB, WASTE OF TIME.