No, I'm very correct. Those games you mention are completely different creatures, they just don't mix.
No you are EXTREMELY wrong. You are so wrong I am about to give up on you.
I will try to make it easy for you to understand one more time.
The games DONT ACTUALLY "combine." You dont jump out of a plane and into a submarine like you would go from flying to GVing in AH. You would have to leave AH to get into Silent Hunter.
You know how all games have maps? Silent Hunter would have
their own maps modeled after AH maps. You know how games have "arena settings" like rain for example? Those would be turned off or disabled that arent interchangeable in the games.
No graphics engines are combined. It doesnt make a dam bit of difference what kind of engines each use or the physics of models. The only thing that "combines" is relevant data like the position of a carrier, an airplane, or a bullet.
That data is translated into usable data for the other game. Then some dude in SH hunts down the cv to sink it assuming he gets past the other guys playing defense for the cv. If he surfaces or when Hitech gives us depth charges for aircraft, PTs, and destroyers, he also has those to contend with.
Aside from Hitech having the time or inclination to do this, the only difficult part of this idea is writing software to translate the data, modeling additional items, and getting the other games do their part. Again, SH doesnt have to have a flight model, it only needs to render a plane when it shows up. AH only renders a submarine.
I never said it would be easy, but it would definitely be easier than Hitech trying to do submarine models in even half of the detail that SH does or trying to create a first person shooter that has all the weapons and dynamics that a game like Call of Duty has. It will take Hitech a decade to add half of those things to his game.
I dont think he has that long, someone else will do it first. It's only a matter of time. And if you don't believe, just look at the link AKwabbit posted...DAMN that wabbit is smart.
http://en.wikipedia.org/wiki/High_level_architecture_(simulation) Looks to me like someones already considered doing exactly what Ive described.