Sansa’s words to Jon were: “Look, Ramsay isn’t going to fall for this double-envelopment thing”
Jon: “Well, what else ya got?”
Sansa: “Derp! Derp! Derp!”
Jon: “OK, we’ve gotta try this.”
Sansa: “DERP!”
It’s entirely possible Littlefinger still outsmarts them both:
Scenario 1:
Sansa: “Look, Littlefinger is coming. He wants…