Ah, of course, that makes more sense. I don't know why I assumed the rear locomotive would be facing forward!

Silly question - as I'm using the test bench here, I'm noticing a significant drop in throughput if I use 1-4-1 trains (both locomotives pointing the same direction) instead of 2-4 trains, but I was given to believe that they were functionally identical. Did something change, or did I misunderstand ...