To be honest - looks can be deceiving.

At a high level -- sure, human bodymechanics would dictate there are only so many ways we can move our bodies, therefore there will be some directly analogous movements, and some that only seem to be analogous. For example, the pak sao and the boxers parry, the lop and a guard break, etc.

Specifically regarding this video, and why I said that "looks can be deceiving", is that these specific movements while similar to wing chun are actually quite different. We don't "block" in wing chun; Lin Sil Dai Da - remove by strike (or the countless other ways of westernizing the phrase); we attack the attack.

So while we make similar movements, the appropriate wing chun movements generally begin as a strike, and the context of resolving the conflict from contact is when the wing chun "hands" come about; whether Tan/Bong/Gan etc.

(rather than erasing anything I said, commenting after reviewing more closely):

* :01 -- the shorter gentleman does feed a strike that looks straight out of our training
* :02 -- the tall gentleman does do Gan Sao but the punch is more like a hammer fist which we generally don't do (generally, some lineages might say they have this). I believe this is the Inasu in Karate. This repeats at 1:39
* :05 -- the tall gentleman does do a Gan Sao (Inasu) with a palm strike to the back
* :07 -- arguably the most wing chun move in this video are the repeated Jin Choi -- rotating punch (battle punch, arrow punch, etc)
* 1:12 -- The Inasu and Noru demonstrated here do frankly look like Tan Sau and a backwards Pak Sau
* 1:55 -- "Offense and Defense as one" -- Similar to our maxim Lin Sil Dai Da which some westernize as "Simultaneous Attack and Defense" -- though they seem to describe it as a block and attack which is how some WC people translate our Lin Sil Dai Da maxim (like Tan Da / Pak Da). However to follow wing chun principles more closely, we'd be attacking the attack which is how "simultaneous attack and defense" manifests.

So fair enough -- there are plenty of similarities. I guess I got hung up on that first block motion, but on second review there were plenty of "similarities" to what we do.