This other post alludes to my question, but doesn't ask it directly. In Avengers: Endgame, Nebula, War Machine, Hawkeye, and Black Widow all
traveled back in time together to the planet Morag, where the Power Stone was located, and then Hawkeye and Black Widow took a ship to Vormir to get the Soul Stone.
My question is, why did they travel together? Couldn't they just have
time traveled directly to Vormir, rather than take the ship?