DL and AF have business relationships and joint ventures. And they are two of the founding members of the Skyteam alliance. But DL had relationships with KE as well, and KE is a member of Skyteam as well. Indeed, DL withdrew all of the codesharing with KE until the safety issues got resolved.
So if the KE report and scrutiny were any indication, I would expect a similar degree of thoroughness. Also, I have no first hand knowledge, but I would not expect the issues (if any) at AF to be anything close to the issues that existed in the 90s at Korean Air.