That's because one of them knows he's won and the other hopes the ref has seen it wrong. When it comes to parry riposte it also matters where you parry the blade to count as a proper parry, if you hit the strength with your weak point then you're not parrying but parry yourself. Sometimes refs see that wrong and with the speed of those movements sometimes even they need a ref clarification.
It would be good for the sport referees to realize that saber is for slash/cut. So these Korean's little touches with the flat side of the blade wouldn't matter. Szilagyi technique is traditionally clear cuts, that's a valid intentional score. Other nations should take notes .
