Not to mention that you can't socially distance on a bus and haul more than about a dozen people. Also, as I understand it, all or nearly all of the passenger cars are in use out of Antonito and the trains are mostly full at the social distancing level of 12 per coach and 10 per premium car. Running from Cumbres wouldn't gain anything in terms of revenue. What you would gain at Cumbres you would lose out of Antonito while doubling your crew costs plus bus costs.
Maximum tonnage trains out of Antonito are probably the best thing going for the RR at this time.
Michael Allen