The Williams Jct stop and shuttle bus predate the sale to Xterra,it was started by the staff that brought back the GCRY from Nature's "takeover" of the ROW.
Not sure if there were plans to buils a Station/shelter at the remains of Wiiliams Jct station.
After # 3 leaves ABQ,NMRX hands off back to BNSF DS-18 at Isleta,It' handed off to DS - 8 to Gallup,then DS - 9 to Winslow.
Gallup Sub does get congested at times EB into Belen and around Gallup yard.There are still unit coal trains to Tuscon Electric power plants at
Coronado and Springerville and off the Transconn at Joseph City(shared plant with PNM).
That's how #3 gets delayed in to Flagstaff/Williams Jct.
Remember UPS rules the roost on the Transconn!
The Land of Enchantment is not Flyover country!