AT&T Technology Development Program interview questions

This interview had four parts and took about 4-5 weeks to complete 1.) Behavioral Interview with HR 2.) Coding Assessment - Asked me about vectors, nodes and strings. It only tells you if you passed the given example cases so keep base cases in mind 3.) Questionnaire - Asks about location and skill set 4.) Technical and Behavioral Interview with 4/5 people - Know object orientated programming basics, data structs, will program in a text editor for them. They will tell you more about the program and behavioral questions at the end

I applied online and had someone who worked there refer me. Then I had a video interview about a week later with HR. The interview lasted about 30 minutes and was purely behavioral. Overall easy interview but never heard back.