In a Rocheworld scenario where two planets are tidally locked and share an atmosphere, but where both the planets are so small that their gravity is very little (as low as one of the dwarf planets in our solar system, such as Ceres, for example), is it possible for creatures that can fly to go back and forth between the planets via the shared atmosphere? Handwave the existence of a breathable, dense Earth like atmosphere of course.
Could a humanoid character fly from one of the planets to the other through that area of shared atmosphere if he/she had wings (again, handwave), or one of those flying squirrel suits with something like a Buck Rogers rocket jet pack?
The way I understand it is that: They’d need enough lift to get off the ground (this place has low gravity and they’d have their wings or jet pack), and they’d have to be able to push further than the Lagrange points because if not they'd be stuck in orbit (but again, wings/jetpack, right?).
So is it possible, or am I missing something else?