Can 2 weapons with Auto Fire be linked? For instance if I have a turret made up with 2 gatling guns how would that operate, if it could.

Yes. For example, the Hailfire Tank Droid has a twin auto-blaster chin turret. The benefit to this is that you can increase the difficulty once to fire with Auto-Fire, but if you don't increase the difficulty, you can still score an extra hit (though only one, and only against the original target) with Linked.

For dual-wielding in combat, it is utterly pointless (unless I'm missing something). You'd increase the difficulty twice, when if you were simply using a single auto-fire weapon you'd only increase the difficulty once.

Cool. Thanks bud