Not trying to get into a argument, but if you know how just about every truck transfer case works, you then go "wait...that can't be right?"
The output shaft of a transfer case is mechanically connected to the input shaft from the trans..and in 4H they turn exactly the same speed, and the rear driveshaft is connected to the transfer case output shaft.
This reminded me of a truck I had many, many moons ago. Back when my buddies and I were recently graduated from high school we picked up some 4x4’s because ... well, just because. a mix of new / old, serviceable and beater. I scored a 77 chevy blazer 350 auto. It popped out of 4h and 4l, but could be “tied” in 4h
I knew that wasn’t a long term answer so I picked up a rebuilt NP203 transfer case at Aamco.
Proceded to enjoy for wheeling for a while then was having work done when my mechanic calls up, says come to the shop. He’s jumping up and down mad that my truck almost killed him. It turned out that in 2h, my freshly rebuilt T/C was powering the front wheels, not the rear. I didn’t even know it was possible. Not sure what he was doing at the time, but I think he was trying to chase down a knocking sound under load.
I can’t believe H/T would have even remotely close to that issue.
I sold that blazer to a farmer buddy of mine for a little less than what I paid for it years later. Still with that goofed up T/C in it.