Northrop Grumman interview questions

Interviewed for a position at one of the locations in the Los Angeles area. The interview itself consisted of a phone interview and an in-person interview. Both were very high-level and very easy. It was basically just a discussion of my work history and the responsibilities of the position. After the interview I received an offer the next day. However, the offer only had a salary attached with no additional info on benefits or additional compensation (stock options, etc). The offer also had a deadline of less than 5 business days. I reached out to HR to discuss the additional benefits (and a potential relocation bonus - I would have to move to LA from out of the area) and received a boilerplate response (one day after the deadline for accepting the offer). I reached out again and was completely ghosted by HR. I received no further communication from anyone at Northrop for over a year. About a year later HR reached back out to ask about my reasons for declining the offer and if I was willing to discuss them. I responded back saying I was willing to discuss and then was promptly ghosted again. Seems like they desperately need people but I'm not sure if it's worth dealing with their HR department.