In either case, you still have to pay attention, because I have had, on occasion, one engine or the other stop for no discernible reason.
Sorry I cannot get the "in response" setup to work properly on my iPad. Probably user error.
I have a layout with 16 sections and relays on a loop that allows me to run up to 4 conventional locomotives. Since there are is a substantial hill, there are five different power arrangements. I am making a couple of changes to make it work with two legacy engines with Odyssey 2. I cannot test it with more since I only own 2. Is this of interest to anyone?