Well, I can comment on this. A week ago I asked the travel agent (which is used by my company) to rebook IAH-CDG to another day. And behold, they rebooked what was an AF issued ticket on AF metal, to the same AF metal on another day, but DL coded, because it made the change cheaper (Like, 1000's cheaper). Don't ask me how that works, but it worked. I felt like my status was recognised. Got the warm welcome speech, and was amongst the first to choose my menu preferences. I didn't get UXP's obviously, but that's not so interesting to pursue after all...
This might not be the full story, because the original ticket was AF. But I can report soon again. Got a fully DL coded ticket on AF metal early January. Booked for the same reasons: huge price difference. Will keep you posted on my findings.
Last edited by Zembla; Dec 24, 2019 at 1:43 pm