The min (53 days) and max (100 days) shows the difference between simple and more complicated cases. This is just an estimation. I am not doing an exact prediction. This is a part of a huge information in a tracker which I found that in google. I don't have enough time to enter allSorry for the question, but what tracker file you are talking about? Also, you need to consider that each process is different so it is not fair to say they are going forward like turtle because sometimes people may take longer to provide the requested documentation or it is simply a more complex process (families with more people, more documents, etc.). Based only in the few examples (without more details) you gave time is varying between 48 and 100 days so it is not possible to identify a pattern.
its information here. But, as I checked, all date differences are same as those numbers which you can see in this table. I tried to create a table with most recent information to show the trend.
Also, if you are not ok with "Turtle", I would say rabbit but as everybody knows they are really a turtle.