AT&T interview questions

I received an email, then a phone from my future boss about setting up a phone interview. We phone interviewed the next day. It lasted about 30 minutes. We went over my skills, job history, and future goal- and of course salary requirements. The actual interview process involved the future boss and one team member. They threw questions at me- rather easy ones based off my prior experiences. I didn take a tour of the building.( I am used to that on interviews). The next day i recieved an offer! Although after the offer..it took almost 1month to start and I was unemployed. It takes a while to set up drug tests ect..they just move really slow They also conduct thorough background checks