When Eva and Willy are in Willy's room watching TV on their beds the light in the room comes from the television set. There is however no flickering of the light, but a steady glow coming from the apparatus.
When Eva returns to the motel room to write Eddie and Willie a note she is leaving, she deposits her hat on clothing on the pullout bed by the window. She leaves. When the men return from the races to find the note, the money, and the hat, there are no rumpled clothes on the bed; just the hat.