The other time traveler in 1882 couldn't be from 1972 and have a Kashmir tattoo because the album Physical Graffiti didn't come out until 1975.
When they first show Wayne Tillerson in bed there is a ventilator operating on the stand, yet he is only wearing a nasal cannula that trickles pure oxygen into the nose. These do not operate together. He would have a tube down his throat and be unable to talk if he was actually on the ventilator.