Here is a good example film I cliped from last night.
HO.afh Turn on Icons, Chase View, and Zoom. This is not a dweebish merging HO, and if I were the F6F pilot, I would have done what he did in this situation. He was going up, and would have stalled if he didn't come around and dive back at me. If he stalled, he would have been lunch for my hog.
You can see as we pass, I was under him and firing. But I chose to push to avoid the collision and not pull up to put my guns on him. As he passes, you can see the tip of his wing come off, and the collision message that he colided with me. I did not see a colision as I avoided it. I flew away undamaged.
I only have my view, but from his position, I would have been under his nose. He pushed a bit too long to make a gun hit and clipped my tail on his FE. This caused a collision for him.
As I see it, the way this works gives us the greatest control over what happens. If you don't want to colide, then avoid collisions.
Gunner