Another question. Why would intellect devourers kill goblins? Aren't they all serving the Absolute? Wouldn't they work together?
But if the intellect devourers didn't kill them, and Gale didn't, and the mercs at the crypt didn't... Who did?
Did they die from crossbows, slash marks, spells? We're the injuries from fire or debris from the ship?
So many questions.
And you've also hit another point exactly. If I even long rest once, I shouldn't meet any of the PCs on the road unless there is good reason why they're still there... Or maybe you shouldn't be allowed to long rest until after you get through the area.