Thanks Jeffrey.  Very helpful.  Sounds like I should return the steal and order nickel silver - just bight the bullet on the rail that comes with the Overland Limited start up kit.

Just getting started (for grandkids) Purchased the Analog "Overland Limited" starter set and then the DCC "Echo Valley Express"  (Like all the cars and set up for the Overland set; like the DCC of Echo Valley.

Overland comes with steel track.  Echo comes with Nickel Silver.  Purchase additional steel track.

Made all the purchases before I realized the different track with the two sets.

I know mixing the two track types is not as aesthetically pleasing, but that aside, is it an issue?