[GauntletWizard]

There's a real quality difference between a burger that's been reheated with bun next to meat and one without. The bun sucks a ton of moisture from the meat and makes it chewy, while becoming soggy itself. The burger is a lot colder in the center, while the outer edge of the bun becomes dry. You really do get a better experience heating them individually, even if just reheating the burger.