Is there a word limit to how much of a book can be imported at one time?

I didn’t know about this before. But I saw this happen when I imported a long pod, over 1 hour long, and only one part of it was shown when I opened it. I thought there was some problem with the import, but i didn’t care to much. But some days later the whole pod was available in Linq. I was surprised to see this happen. I haven’t seen any information about this behaviour in the help text or anywhere else.