Pretty clear Illegal Block fouls by K on both of these. On both of these plays, K gets a major advantage with the blocks by "taking out" a R player who is potentially getting in position to secure the ball. Also, pretty clear that current mechanics don't work real well when trying to identify early blocks by K since these are pretty obvious and right in the area of the ball where primary focus should be.
IMO the focus is so strong on identifying #1 - ball contact by K or R , and #2 when the ball has traveled the required 10 yards, that the illegal blocks get regularly missed. Not sure best way to address this problem, but certainly it should be stressed in the pregame discussion that K illegal blocks are just as important as ball touching and the ball going 10 yards as is shown in these two clips.