[vel0city]

> Libraries used to be able to do this

> without libraries having any say in it

You're assuming the libraries ever had a say in what Overdrive's catalog was. I can't imagine they ever did.

Some libraries probably presented a UI suggesting they could do it as their own combined catalog probably wasn't synced to whatever Overdrive's library was. But you're then assuming your request for a book that wasn't in the Overdrive library actually got to the point of notifying Overdrive, which is yet to be shown either way.

I doubt it did anything more than have a librarian check if the book was in the Overdrive catalog, and if not they probably just closed the ticket. And right now this idea has just as much evidence as yours.