Nice.
Technique is a combination of understanding and implementation. Understanding you can get through observation or being instructed. Implementation is the part that takes time if you want to do it well.
It happens all the time in MA. You observe a technique and you understand it. You can perform it at a very basic level but with lots of technical errors. You correct your errors to improve the quality of your execution of the technique. You practice it over and over to establish muscle memory so that you can use the technique quickly without error.
Then you roll/spar a ton so that you can develop situational awareness so that you are able to recognize when to use the technique and when people are trying to defend the technique.
Obviously it's a bit more complicated than that, but that's kind of the gist.
So yes, it's perfectly conceivable that you could understand a technique from watching the UFC and then execute it on a person that is completely unprepared for the technique and unfamiliar with how to defend the technique. In spite of your lack of practice and the likely numerous errors in your execution, since you got the most critical fundamentals in place (like placement of the blade of your arm under their chin, the use of a grip to link your hands, and the use of your legs and/or body to create a fulcrum of leverage) the technique would still be effective enough to end the fight.
I wouldn't suggest using it against someone who has any level of training, but it will work on someone who has no idea what you're doing or how to defend against it.
Technique is a combination of understanding and implementation. Understanding you can get through observation or being instructed. Implementation is the part that takes time if you want to do it well.
It happens all the time in MA. You observe a technique and you understand it. You can perform it at a very basic level but with lots of technical errors. You correct your errors to improve the quality of your execution of the technique. You practice it over and over to establish muscle memory so that you can use the technique quickly without error.
Then you roll/spar a ton so that you can develop situational awareness so that you are able to recognize when to use the technique and when people are trying to defend the technique.
Obviously it's a bit more complicated than that, but that's kind of the gist.
So yes, it's perfectly conceivable that you could understand a technique from watching the UFC and then execute it on a person that is completely unprepared for the technique and unfamiliar with how to defend the technique. In spite of your lack of practice and the likely numerous errors in your execution, since you got the most critical fundamentals in place (like placement of the blade of your arm under their chin, the use of a grip to link your hands, and the use of your legs and/or body to create a fulcrum of leverage) the technique would still be effective enough to end the fight.
I wouldn't suggest using it against someone who has any level of training, but it will work on someone who has no idea what you're doing or how to defend against it.