Sempra Executive Assistant interview questions

Very rigorous interview process including testing - literacy, math questions, Excel, PowerPoint, etc. All interviews went well and I sent follow-up thank you emails to those I interviewed with. Communication with the HR coordinator was pleasant and speedy. After 3 weeks I had not heard back after interviewing with the top level leaders and only after I sent an email did I get a reply an additional week later that I did not get the job in a very passive “thanks for interviewing but we’ve moved on with another candidate” email. Seems very informal for the amount of time and work you put in for them.