Customer Service is still seperate. DL and NW wear the same uniforms and it may appear integrated, but it can't be until representation issues are resolved. As of right now, DL801 ATL-NRT is a NW 744. The gate and ramp agents are all NW employees and no DL employee may touch the gate/aircraft. Not sure if they have NW gate agents working the DL planes in DTW like DTW-LHR/PVG.

I don't know what happens when NW goes away. I would think if IAM represents the NW employees, and NW goes away and there is no such thing as a NW employee, that IAM doesn't represent anybody and would be gone until they represent DL employees whether that be in a month or 20 years. I'm sure that's not what happens, but I honestly don't know.