Concerning Doujins and Pixiv Logs

If a series of doujins by an author is based on a group of pixiv logs by the same author, carries on the story of said logs and are not sidestories, and the author later makes a pixiv log continuing from the events of the doujins before making another doujin, do the pixiv logs and doujins go in the same pool, or do the doujins go in a separate pool while the pixiv logs stay in the original pool while linking to the doujin material in between logs?

Why not both?

Posts can be in more than one pool at once. Add them to a separate pool to make it clear they have been published separately and to the original pool for ease of reading.

If the creation of additional pools should be avoided, add them to the original pool and leave a note in the pool description and on the first image belonging to the doujin.