Activities - Required Time Explanation

In looking at the Activities page (specifically the Last Activities table) there is a column labeled ‘Required Time’. At first glance this would suggest that the this is the time required for the entire backup process to complete but this is not the case. The Required Time listed shows 50 minutes for one particular client and when I look at the log it shows ~3 hours (which is indeed how long it took to complete). It seems that waiting for the file hashing and copying threads and writing the file list is not taken into account in the Required Time. Is this expected? I would expect the Required Time in this example to show the full 2h 48m 5s time.