Just completed a TATL journey via JFK on Delta. I am pretty skilled at getting though terminals, but the walk from the AirTrain into the terminal messed me up pretty good, walking along a dangerous roadway with a group of other confused people.

SkyClub closed prior to scheduled departure of the flight.

My bag marked for Zurich went to Bogota, rejoining me a week later in Athens.

I returned on a KLM codeshare, so did I bypass the Delta facilities on return? It did go smoothly!