“Compartment No. 6” (2021) – “No spitting on the floor.” A train conductor warns Laura (Seidi Haarla) – a Finnish woman studying in Moscow – about this spewing statute as she boards a train. Good to know because Laura was about to reach for a pinch of chewing tobacco. No, not really. However, this 30-something is heading on a 1,200-mile journey almost due north from Moscow to Murmansk. By car, the trip would take 23 ½ hours straight, but this railway carriage makes stops along the way, including an overnight…