Originally Posted by
bankops
The Delta rep misinformed the OP. ST rules apply in this case. The OP had onward domestic travel, thus access to the DL lounge. The OP no longer had anything to do with AF/KLM and was not connecting on an international itin with them, thus no access.
100% incorrect. OP flew same day ST international flight and as a STE+ passenger gets lounge access to ANY SKYTEAM (not just of the carrier being flown) lounge as they were connecting onward to another ST flight. If there was an Alitalia lounge they could've gone there, if a China Airlines lounge they could've gone there, etc... ST rules dont limit you. In fact some of us pop between lounges if in a city with multiple and have longish layovers.