https://www.planetf1.com/news/christian-horner-mclaren-pit-stop-dummy-didnt-make-any-sense-japanese-gp
But, before any of the leaders had boxed, Norris had been told over the radio “box to overtake Verstappen”, that followed by a “stay out”, as McLaren came up short in their efforts to spook Red Bull’s strategists.
As it turns out, Red Bull saw right through that plan.
Speaking after the race, Horner said: “It was clear that pit stops were approaching. McLaren elected to pit Oscar first. But prior to that, they called a dummy with Lando.
“That really to us, didn’t make any sense, because he would just come out in traffic.
“So we stuck to our guns. We didn’t react to the dummy. They then pitted Oscar, and it was clear that they were going to pit Lando the following lap. So it was then a matter of covering Lando.”