I'm so confused. The reporting on this sucks. Did they stand at the front door knocking for an hour waiting for someone to come out? Did they physically break

I'm so confused. The reporting on this sucks. Did they stand at the front door knocking for an hour waiting for someone to come out? Did they physically break into the office? Does "closed" mean the office was physically closed/locked? Does "no Twitter employees" mean there were no humans physically present at the office, or does it mean there were no people directly employed by Twitter at the office? E.g., are they not counting security and other 24/7 staff that would normally be at an office building?