Nope. Now you are off a gun to gun solution and you are subject to frontal quarter attack. Truly different shot angles and no longer a HO. Your definition of a HO's envelope is too large.
With respect, I disagree. It's not just about angles, it's about intent and possible outcomes. If both players easily COULD HAVE a solution when they come within range to fire, but one chooses to evade instead, it's still a HO. In other words, if you ATTEMPT to HO, any immediate resulting shot is a HO regardless of what your opponent does.
Ack-Ack, the point to me is that both players DO have a firing solution, but one chose not to take it. Depends partly on how early he maneuvered to avoid, I guess.
A non-HO, front quarter shot is where the shooter dispatches the victim before the latter is able to bring his guns to bear, or from an angle and relative vectors in which it never would have been possible for the victim to get a shot in even if the attacker is only 20 degrees off his nose. The victim never had a solution open to him, the attacker didn't win a dice roll, he knew he wasn't going to get a face full of lead whatever happened.
That being said, some HOs are more equal than others. If I'm taking off and can barely get wheels off the ground before Captain Vulchoid screams down the runway straight toward my nose guns-a-blazing, I'm going to pitch up and shoot him if I possibly can, and why not? He's got e and position, I can't possibly get out of his way and am probably dead whatever I do anyway, so it's on him to avoid the HO if he doesn't want to roll the dice on dying. The same is generally true whenever one player has such a commanding advantage in e and position that he can freely dictate the terms of the fight - if that ends up as a HO, it's primarily the fault of the dominant fighter, he could have avoided giving his opponent a shot while the opponent probably couldn't. And if you're flying a Brewster against a 110 your opponent would be stupid not to take advantage of any HO opportunity he gets - an opportunity that can only occur if the Brew driver does something very wrong.