Aikido Tenshinkai Of Florida - Adrade Sensei
He's quite accomplished.
There is no native/traditioal ne-waza in Aikido, and unless I'm mistaken, there's one choke in the entire system. So yeah, he's clearly pulling it from elsewhere, which is fine.
You are laboring under the assumption that he cannot create technique from observation and medical anatomy, and end up with something that looks borrowed but falls legally within the perimeters of the Concepts that drive Aikido.
The fact is no one art is pure. It is all borrowed from somewhere.
I point out a book to you on Aikido ground fighting, and told you much of what is done standing in Aikido can also be done as Shikko Waza or properly name Suwari Waza, but you can Shikko between Suwari Waza. Knee walking, and knee fighting...
No... Seriously, Ne Waza includes Shikko Waza. Why? Because you can Stand Up from Shikko Waza or Suwari Waza, just like from Ne Waza... Therefore neither are standup fighting... But are ground fighting.
Now... On the ground kneeling or Knee pinning and opponent.. If you applied at joint lock... What are you doing?
You are "say it with me" !!!grappling!!!
You realize that Samurai could knee pin a kneeling opponent, draw a tango or wakasashi and throat cut in less than one second Right?
You realize they developed a choke for use on a kneepinned samurai in armor, pretty much like a GI Choke?
About aikido's chokes....
I know several chokes that I learned in Aikido.
One is a sidesteping at punch. Dropping a 90 degree locked elbow strike on the punching arm to drive it down. And then violently thrusting the inner elbow into the thoat below the chin, keeping the elbow locked and walking backwards in a circle, while keeping their heels dragging... And gently lowering thier sleeping body to the ground.
This one I have used on a resisting attacker in real life.
For the sake of argument...whether or not you belong to a tradition where Aikido is understood as a list of techniques (a "one through ten" kind of thing carved in stone) or whether you are of a tradition where Aikido is understood more in terms of principles/concepts.
If you belong to the latter line of thought/practice, you will see lots of everything - not just ikkyo, nikyo, sankyo, shiho-nage, not just chokes, etc.
Moreover, you will see "basic" techniques (which will not be experienced by you as "basic" in the same way that they are experienced by the formerly mentioned practitioner) being done in many different ways (ways that have nothing to do with stylistic preferences but that have to do with an internally consistent combining and re-combining of principles).
Thus, in some family lines of Aikido, you will never see any chokes being used defensively and/or in response to any type of aggression.... While in other Family Lines you will see many chokes. As they are in the Kata.
What often passes for a "choke" in these lines of thought/practice is the "attack" Kubishime Katate-dori.
However, in my opinion, one should not feel that in learning to offer this cue to Nage that one is learning how to choke someone out and/or even choke effectively.
It is the same thing with Tsuki - practicing Tsuki over and over for many many years is not going to make one a proficient striker.
Aikido "attacks" are best understood as cues and/or as energy prints.
When they are understood as energy prints, one can see the core element of a given tactic and all of its variations - which is good for training and necessary for training within idealized conditions - but one does not thereby learn the specificities of a given tactic.
It is the specificities of a given tactic that make it effective and applicable outside of idealized training conditions.
Thus, when asked, "Are there any choking techniques (which is more than the energy print of chokes) in Aikido?"
Answer:
For some, yes. Absolutely.
For others, no.
Here's another shot (video) of another choke example - it's the last technique in the series:
Senshin Center