Even if Nate meets someone he particularly admires, even if they're not German, he would extend an olive branch; otherwise, he wouldn't have recruited Gao Yang in the first place. However, now, the majority of the members of the Angel Mercenary Corps are German.
This makes it easy to understand why Raymond wanted to see people other than Yake; he just wanted to see if Gao Yang and the others are part of the Angel Mercenary Corps!
Speaking of Angels and the Iron Madonna, there wasn't much animosity in the beginning, but once Satan got involved, the enmity between Angels and Iron Madonna became significant.
Initially, Gao Yang and his team ambushed the Iron Madonna in Ukraine using the name of the Angels, which caused the Angels to take the fall!
The Angels wiped out nearly half of Iron Madonna's people in one go, so you can imagine what kind of relationship it is between the Iron Madonna and the Angels.
