How about:
-2 middle aged flight engineers/system operators given a very basic/minimum hours pilot course.
-Type rating 737, and the next two, three years flying autopilot.
-One upgrades to captain after minimum hours.
-A 737 prone to map shifts.
-Poor ATC.
-Limited situational awareness.
-Limited manual flying skills.
-Poor systems knowledge.
-Unable to handle a surprise go around
-Not able to prioritize:
Aviate, navigate, communicate switched to communicate, communicate, communicate. As systems operators they would have all the time in the world to do that. Not as pilots.
Thousands of FE hours does not make you into a pilot. Gulf Air lost an Airbus when a FE turned pilot flew the aircraft into the sea.
STS works AFTER TAKE OFF.
Disclaimer: I'm not an aircraft accident investigator, and the views above are my personal speculations regarding this accident.