I finally got a chance to return to the property that I had incorrectly thought had two condenser units for one coil (two for one??? thread) and discovered that that indeed there were two evaporator coils. They were mounted in series/ in line with the furnace, larger one nearest the air handler and then the smaller one which I mistook for just part of the transition to the plenum for the ductwork. The second set of refrigererant lines are there I just didn’t see them the first time around. Lesson learned – I’ll be sure to investigate the situation more thoroughly in the future when things get confusing.
Thanks to all who contributed to my enlightenment with your comments.