US Postal Service interview questions

Applied online 2 months ago, had an interview today, recieved email for drug screen and background, and now I am waiting. During this time I took an online personality test, then went for a proctored exam. I was waiting quite a while before I was given an email out of the blue to interview.

Applied online, took the test from home and the proctored, scored 85%. Got an email to do the drug screen and background. Received an email for the interview. Went to the interview and it was a group interview and the we were each called individually for an interview. Recieved a conditional offer while in the interview, but was told not to put in my 2 weeks notice at my other job until I recieved the official offer email. I am still waiting on that offer to come in.