I had a similar issue on a friend's 08 Nissan Altima a few years ago. The CV joint went bad, and I couldn't get the hub bearing and shaft out. Car had north of 200k miles, and the rust to show it. I tried Kroil, heat, slide hammer, air hammer, pretty much everything. I ended up having to get a used knuckle/hub assembly from eBay to get the new CV shaft assembly in. Thankfully all the ball joints came out. I brought the CV shaft/hub assembly to a friend who has a harbor freight press. He cranked down on it but stopped once the metal supports on the press started bending. Ridiculous, not sure how it got so seized in there. I have dealt with many Jeep Dana 30 axle shaft/hub assemblies that were seized, but this Nissan kicked my butt.