66L > f.H is a frame trap from that range, so it is a context that the player can be ready to confirm the counter hit if the opponent decides to mash buttons in between. In other words, he is ready to react when the 66L hits on block and the opponent decides to mash. The player is also using simple inputs, which makes it a little easier to confirm the hit. It still takes some practice to hit confirm properly though.

@@brainiclus Wah thanks for the explanation ! Good to know the thought process behind it. I need to practice my hit confirming !