Man, I could have made a video just like that on an archery deer hunt in northeastern Colorado during the 1990s. In fact, the terrain was almost identical.
I had glassed up a nice bedded buck from about 1/2 mile away. I decided to make a stalk but had to take the long way around to get the wind right. When I did, I kind of lost the exact location of the buck. I did a bit of guessing & crawled up the backside of the hill I thought he was on. If I was right, he would be just below the crest on the other side when I topped out. I guessed correctly.
When I got to the top, his antler tips were no more than 5 yards from me. I have no doubt I could have closed the distance even more. But I had no shot, so I decided to wait it out, hoping he would stand up.
What I didn't plan on was the smaller buck that was bedded out of sight within a few yards downwind of me. He caught my scent, jumped up & headed for the back 40. Of course, the bigger buck did the same, while I fumbled with my bow, hoping he might stop in range.