Maybe that's the info McLaren will present to the stewards but we don't know that,which is why I don't really agree with any penalties for Max. Norris already gained an unfair advantage with that overtake and punishing both drivers still leaves Lando with that advantage. Considering how stewards have been giving out 10 second penalties Lando getting a 5 second penalty was a slap on the wrist, and it almost didn't matter because at the end once the penalty was applied the delta between Max and Lando was less than a second. Had it happened a few laps earlier Lando could've outpace the penalty.

Based on the information we know, punishing both drivers in that situation sets a weird precedent where sometimes it's acceptable to overtake off track and I don't think anyone wants that door to be left open.