I think you misread the conversation you jumped into then. Rollo said that "You should be at a distance that you're able to pull up in time no matter what the car in front does," I disagreed that this was a standard in any form of racing, and you said I was wrong.
Vettel wasn't trying to overtake Hamilton when he ran into the back of the Mercedes, so rules on overtaking aren't really relevant.
Um, I think that when you run into somebody from the rear, you have overtaken them.
https://rallyjournal.com/toyota-wrc-star-caught-in-a-crazy-situation/
In practice, the risk of snow is concentrated on one stage in Platak, where the route climbs to over 1,000 metres above sea...
https://www.fiaerc.com/en/news/champions-unite-as-carlberg-steps-up-in-erc-with-llarena-racing
2026 ERC News & Rumours