I have a less than competent dealership tale, but it's for a Mopar.
Had a Sebring convertible, bought used with only one key. Took it to a dealer to have a new key made and programmed. Their youngest mechanic brought out their gizmo to program the computer for the new key.
I mentioned to him about how the convertible was based on the sedan instead of the coupe. Then I went and sat on a bench to watch.
He putzed around for a while, unable to find the second connector the book said should be there. So he went and got the next older mechanic. Same story, can't find the connector. So he went and got the oldest guy in the shop who came out and told the other two "You have to use the sedan settings for the convertible." and opened the manual for the gizmo to that section which showed there's just one connector for key programming on the sedan and convertible.
Ford is guilty of similar WTH-ness with the Ranger line. Why did they choose to have so many electrical differences between the Ranger pickup, the Sport Trac, and the Explorer/Mountaineer? It would have been far less cost and complication to have them all use exactly the same electronics and wiring harnesses, with a plug in bit in the middle for the different vehicle lengths. One front harness, one rear harness, simple wire bundle in the middle.
I wouldn't be surprised to find there are major (or minor) yet pointless variances in things that do exactly the same job in the F-150 and Expedition. Differences that make it impossible to swap such items between the pickup and SUV fo no $#%^# reason other than to have different parts.