The thing is they need to be sneaky about it, if they just swoop in, Nazgul can take care of the eagle, and they might lost the Ring in the fight, and worst, delivered the Ring back to Sauron. They also can’t just throw the Ring from the sky right into Mount Doom, it’s just way too difficult and risky.
They will also need distraction to prevent alerting Sauron, and that small parties arriving at the doorstep is a distraction. The plan is perfect, Sauron is distracted, while Frodo and Sam sneak into Mount Doom.
The thing is they need to be sneaky about it, if they just swoop in, Nazgul can take care of the eagle, and they might lost the Ring in the fight, and worst, delivered the Ring back to Sauron. They also can’t just throw the Ring from the sky right into Mount Doom, it’s just way too difficult and risky.
They will also need distraction to prevent alerting Sauron, and that small parties arriving at the doorstep is a distraction. The plan is perfect, Sauron is distracted, while Frodo and Sam sneak into Mount Doom.