He heard Madam Chandra talking about an unrelated topic as they walked away, proving that they were treating this far too lightly. Chandra was discussing with Frank, “But if I buy enough of them, I can change the name to the Chantom Mountains!” “People would always spell or pronounce them wrong! They’d write it with an ‘S’ as the Shantom…” Frank’s voice faded into the distance.
Dale's conclusion about them taking things too lightly should FOLLOW their dialogue, not proceed it. His conclusion follows from their words.
