The King of the Hill revival has confirmed that Nancy Gribble resumed her affair with John Redcorn, a plot turn one Collider writer argues undermines years of prior character development. In Season 14, the show's new opening titles teased a renewed relationship between Nancy and John, but that season ultimately played it as a fake-out, keeping the pair's YouTube-based working relationship deliberately ambiguous rather than confirming romance.

Season 15 removes that ambiguity: the premiere episode, "Failure to Hard Launch," and a later instalment, "The Best Little Marriage in Texas," reveal that Nancy and John did in fact rekindle their affair. The reveal emerges through a subplot in which the Rainey Street neighbours puzzle over a mystery electric truck, which Peggy Hill explains was a gift to Nancy from producers of her "Selling Arlen" web series — a plot thread that ultimately ties back to confirming the rekindled affair between Nancy and John.