Yes, the connection jobs were finished when I opened the configuration. I installed the Reading List plugin to see what would happen, and when I wanted to add my connected device, it added my Clara HD, instead of my Libra 2 which was the one that was connected!
So I'm guessing they're one and the same for Calibre?
It might be related, I transferred the database from the Clara HD to the Libra 2 following this guide:
https://www.mobileread.com/forums/sh...d.php?t=336182