Sarah:
And do those who are "out" know that Eoni and Ovo are upright and running?
Probably not. Ovo was well in the rear, behind all party members. Eoni hung back to wait for stragglers.
Elam and Eoni have the same movement speed (fastest party members). All other PCs, except Ovo, moved at the same speed. Ovo was/is the slowest.
Based on my last game post...
Elam and Grub last saw Eoni on the stairs leading up to the 1st level. Sarah has not seen Eoni since they were fleeing from the behir's cavern. Ovo got left behind in the cavern and neither Elam, Sarah, or Grub has seen him in a while.