Thanks you , in fact I called IRCC and told me I should receive a correspondance about the test . He don’t know what is it . So all I can do is wait and see what is it .It's likely they just missed a status update. It's possible all status updates (Test/Language/Prohibitions) will be made at the same time, just before DM.
Of course you can write to your local office and see what they have to say but no reason to lose sleep over this.
My guess is they look at the recording before marking it as complete. That's the only thing can think of why there's so much variation in when the test is marked completed. Probably someone missed the update but it should be sorted out.