Itβs possible a 4th Umpire is already involved, someone sitting in a booth watching a screen. Just my opinion but it would explain why there is sometimes a pause of 2 or 3 seconds before a free kick is paid. Has been happening for a couple of years, maybe only 1 or 2 a game though.
Also, re. the 2 video clips shown, both should have been frees, Sparrow, holding the ball and Fritsch, interference in the marking contest. Evidence that the umpiring on the night was poor, particularly No.22 Nathan Williamson, with MFC being hard done by.