In reply to: https://activitypub.space/post/1722
@julian hmmm. With a reverse chron collection you can do pretty well with `totalItems` and the first item on the first page.
If there were net items added or deleted, `totalItems` will be different.
If the same number of items were added and deleted, the most recent item will be different.
So you can check synch with a couple of hits.