And the deal also included the rebranding of the Renault PU as Cadillac. Andretti wanted to sell this as bringing a new constructor to the sport.

That's not true. They stated towards the press that GM will be involved in technical aspects without going into details but it's not really that hard to guess with parts those are:

GM has the facilities such as including several wind tunnels, aerodynamicists, engineers, and so on. At the very least the GM facilities will be used, potentially some personell as well.

Alfa Romeo is not involved in Sauber's technical aspects at all. GM's involvement will definitively be more than that.

I thought the regulations required any additional teams to use Renault engines since they have no customers?

Making a contract ahead of time was important to show Andretti has no yolo attitude about entering the competition.

There’s no such thing in business. All that means is that it would be extremely costly to back out at this point.

Yes, I know and he also said that. I don't have time and energy to translate the entire thing.

The current cars are also able to stay within the track limits, the problem is more that from the seating position the lines are hard to see and apparently the drivers rely to feeling the kerb vibrations to a large degree.

They said the same about the LMDh project.

Who said that? Schmidt vom AMS after talking to the person literally in charge? Audi is sending their subsidiary Lamborghini to WEC instead.

The only one treating it as fact seems to be you.

I literally wrote that I don't believe it until other outlets also report on it with their own sources. You replied to my comment saying that, so you know my position. This means that you making that claim about me is not in good faith. I won't continue this discussion with you because of that.

It’s also not being reported as a story, but as a rumour. And not by Radio LeMan but someone on a podcast.

Eve Hewitt uses the "@radiolemans" handle, so I guess when Hewitt says it, it's the same as Radio Le Mans saying that:

And what level of communication goes on between the parties is unknown.

Sauber has to know of the deal falls short, likely even by law. And plenty of motorsport outlets cover both F1 and sportscars and somehow Radio Le Mans is the only one where not one but two sources said the same and nobody else heard of it? Doubful.

Audi isn’t even in F1 right now. There are no connections to F1 publications, it all comes from the sports car world.

But Sauber is.

I don't believe it's true, btw. Why would only a single sportscar outlet report on that and not a single one with connections to F1?

Audi already left Formula E, cancelled the Le Mans hypercar, announced the end of GT3 and Dakar racing. Formula 1 would be the sole motorsport left to promote their brand.

So Andretti taking over? ;)

That's the suggestion the hosts of the show make.