Nice! I was waiting on the annual Ted EBR psych out video. He did this last year also if you remember... Great shooting! Now if it wasn’t for that damn wind....
Paintballers used to do that back when i was into that more, i kinda figured there would be airgunners in the bigger calibers that would be doing that too. You gotta deal with a hose pigtail, and really in a hunting situation it doesn't make much sense because you aren't blowing through your shot count. Paint ball is another story for some.
When semi auto pellet guns become more refined and able to take larger calibers i think that may well be the case. The equipment for remote tethering of a bottle is already there. Plus with the rise of carbon fiber bottles and the like, as the tank tech gets lighter and lighter, carring a larger bottle on the waist or back probably won't be as big a deal as one may think.