I have been reading in different posts here concerning problems with OLCI and the EUA process when booked on DL.

The trip I'm looking to book is SEA-BWI, and I have a number of options.

Some options are the same DL metal, but I can book it as a DL flight or a NW flight (operated by DL).

Is there any advantage to book it one way over the other? I'm just doing this for the miles, so I hate to possibly mess up the EUA process by booking this the wrong way. It may not make a difference, but I've not flown on DL since we became upgradeable, and I'd like to see what the DL process is like.

I'm sure someone has gone thru this, and I'd like to know how it worked for you.

Thanks