When did W-Y discover the alien was on Sevastapol?
How did they know it was there?
And why send the Torrens?
Where they ever actually interested in the Nostromo flight recorder, or just the alien?
Did Taylor or Samuels know about the alien before arriving? Taylor seems to want to get alien for W-Y, but is apparently considered "expendable".(Like Amanda and The rest of the Torrens crew)