LAHTI, Finland—The Norwegian lineup for the women’s 4 x 5-kilometer team at the 2017 Nordic World Championships on Thursday was daunting: Maiken Caspersen Falla, Heidi Weng, Astrid Uhrenholdt Jacobsen, Marit Bjørgen. On paper and on snow, a rundown of names and accomplishments. Here during these Lahti championships the Norse foursome have hauled; Falla and Weng with a classic team sprint gold, Bjørgen a 15 k skiathlon gold, and Jacobsen’s hardware was a bronze in the 10 k classic. On Thursday...