Originally Posted by AntonS

Thanks. If there any problem, Delta should probably re-accomodate at least on their own metal, although not ideal, there is CDG-ATL-LIM later same day.

​​​​​​And I called Delta again today because I realized there was later flight NCE-CDG which would be perfectly fine for connection too. Agent told me that my segments are indeed married so change is not possible even through seats are available. So at least things look OK on Delta side.