If the company has completed the interview phase, it may be having trouble to make a final decision.
Perhaps there were two well-qualified candidates and the interview team could not decide who the job should be offered to.
The time from job offer to acceptance is also about two weeks. However, this is the average for one
sector of the job market. For others, offers are received within 2 days of job interviewing.
Sometimes again, the hiring process is dragged onto for weeks, and even for months.