Thank you for your reply. There are a few reasons I still might prefer to book on Delta - understanding that I risk missing my connection on Adria if Delta's incoming is late (as scheduled, it would be 1:45 connection time). Question (probably no longer a "Skyteam question," sorry), would Delta be able to check my bag along through to Ljubljana on my Adria flight even if I booked the two tickets separately? I have heard that it can be possible for them to do this.

Thanks!