I did not miss your point, but instead wanted to add my experience.
While I do appreciate his videos, in many of the early EV vids, he "skews" the numbers via omission of facts. I called him out multiple times. He often ignores how much power is purchased. To my point below, the battery is HEATED when cold, and this requires more power to be purchased. ONE CANNOT USE THE DASHBOARD DISPLAY to indicate power used.
The Winter road trip was a pretty good video. But it DOES NOT represent winter ops for someone who parks outside, such as in the lot during a cold day at work. In Canada, the Model 3 we had experienced a HUGE range loss when the battery got cold. Sitting outside in the winter cold, when not "plugged in" kills capacity. Jason's car had a warm battery for maybe, 90% of his trip, maybe 100%.
Again, if you can't "plug in" when the car is in the cold for a long period of time, range suffers.
But let's not kid ourselves, range suffers in the cold on gas powered cars too. Although my Jag X-Type seems to get better MPG in the winter. Prob because I'm not running the AC.
Jasons pretty good, I occasionally catch a glitch myself.
Bjorn uses an external monitor that gives you cell voltage to measure battery loss.
Curious were you using a heat pump car?
For sure an 8 hour shift in a parking lot will cost energy, and a 15 hour overnight park more -
One canadian guy timed the interior heat up on a -34 deg morning from -23 to + 20 in 4 minutes.
He came up with about a 9% loss overnight (15 hours) using the dashboard.