Yeah nothing mysterious. Just that the way these things work, if there's an inkling of a winnable case, they'll be coaching witnesses and going through a lot of electronic communication and statements very carefully, and they won't drop the overall process until they're pretty certain nothing else that's substantive could appear.
If they were interviewing Partey about a third accuser's statements in February, it's probably too soon for police to have shelved all this behind the scenes, which we've been speculating might have already happened up until this report.