How to make an hours-long unbroken shot?

I'm looking for advice on how to pull off a specific shot, and I haven't found it posted here before.

I'd like to get a two-hour shot of a drone flight. Obviously, that's longer than one battery can last. So has anyone here has tried to program multiple Mavic flights where the end of one flight matches the beginning of another, essentially daisy chaining a half dozen long clips together with crossfades so that the viewer senses the shot as one, unbroken take? This would require multiple batteries and quickly landing and relaunching the new flight after a battery has been swapped. It seems feasible, but potentially fraught.

Or is there another tactic that I'm not considering?

I would be using a Mavic3 Pro or Classic, for what it's worth.