This is by far the nicest interview I had- professional yet very relaxed -from HR interview to panel interview with the hiring manager. They maximize the time for both of the interviews and it took an hour each. The interval for the first interview to the second one is one day. Then I haven’t heard anything for a whole month. Might be the timing, might be for a completely different reason. They reached out again by mid December for another interview and contacted me early January but I already signed an offer with another company last week of December.