From this post, here’s an example Dataview script to extract the contents of callout boxes from daily notes, and present the result in a table:
Demo vault
Download here: https://drive.google.com/file/d/1HvWT_WlxVRVTlJw-T2CCnyPfJRNi_kQJ/view?usp=sharing
Dataview script
Asked in these threads: