I did find some pics of AA planes with the screens in both the aisle and over the seats/under the overhead bins on 737's.

Important caveat: That picture with dropdown screens over the aisle is not a real AA plane! What shocked and confused me is that the safety card indicates the MAX 8, which was first delivered to AA in 2017 and has never had IFE screens. Also, the American Way cover is from January 2018. Sure enough, the photo is actually of a
training mockup that does not match the actual configuration.