Last Tuesday, ten experts brutally took Tim Vanderhook's own rule for AI buying agents and applied it to Viant. The rule was simple: don't let the seller grade itself. They found a company that runs the agent, reports the results and owns the measurement company.

This week the rule gets a harder test.

The question isn't whether Viant's numbers are right. It's whether the DirecTV that Viant sells is DirecTV at all.

Here's what media buyers told ADOTAT.

Viant sales reps are telling agencies they can get DirecTV cheaper through Viant than by buying from DirecTV directly.

So ADOTAT called Viant as a prospective buyer.

Same pitch. DirecTV, through Viant, for less.

It's a great pitch. DirecTV is premium, big-screen, older-skewing television, exactly the audience a CFO wants and exactly the price a CFO hates. A rep who promises the first at a discount on the second is a rep who makes quota.

There is one small problem.

DirecTV told ADOTAT the claim isn't true.

That leaves an interesting situation. One company owns the inventory. The other company says it can sell you that inventory for less than the owner does. Either DirecTV's own sales team is the most overpriced reseller of DirecTV in America, or somebody is selling something that isn't quite DirecTV.

It's the second one.

A person at DirecTV, who isn't authorized to speak publicly, explained it.

The inventory Viant sells isn't the inventory DirecTV sells direct. It's the remnant: the shows nobody else wants, the breaks the direct sales team couldn't move, the leftovers.

And DirecTV knows the leftovers get blended. Viant takes them and mixes them into a larger package with other supply. DirecTV's view, according to that person, is that this doesn't take anything away from its primary advertisers.

People inside Viant describe the same thing from the other side. Viant is pitching agencies a larger buy: DirecTV, plus other premium streaming inventory, all blended together.

Put those two accounts side by side and the contradiction disappears.

DirecTV is right. Its premium inventory isn't cheaper through Viant.

Viant's reps are right, sort of. "DirecTV" is cheaper through Viant, as long as "DirecTV" means DirecTV's leftovers, blended with somebody else's inventory, sold under DirecTV's name.

Of course it's cheaper than DirecTV. It isn't DirecTV.

ADOTAT asked DirecTV six questions on Sept 24. Does DirecTV sell to Viant below its direct rate? Did it approve the cheaper-than-direct pitch? Does every impression sold as DirecTV run on DirecTV? Can it even check?

DirecTV answered through its outside spokesman, Bill Daddi. DirecTV said the questions touched on what it considers confidential and proprietary, and it offered a statement for background only. The statement echoed Viant's announcement. ADOTAT didn't agree to those terms and isn't publishing it.

None of the six questions got an answer.

On Monday, ADOTAT went back to Daddi and laid out the finding directly: Viant is pitching agencies DirecTV below DirecTV's direct CPMs, and the lower price appears to come from blended traffic. ADOTAT asked whether DirecTV allows Viant to use DirecTV viewers or DirecTV first-party data to extend campaigns onto inventory that doesn't run on DirecTV. No answer had arrived by publication.

So: a company whose name is being sold at a price it says is impossible had a week to say so publicly.

It sent a statement it didn't want printed.

Now to Viant's own words, because Tim Vanderhook has been really generous with them words.

In a podcast interview at CES, launching Viant's autonomous buying product, Outcomes, Vanderhook drew the line between Viant and the walled gardens. Google's and Meta's AI products are black boxes, he said. Viant's is not.

"It's full transparency but no control," he said. "You get to know ahead of time and after every publisher website, app, wherever format."

Every publisher. Every app. Before and after.

If that's true, it's the most useful sentence in this story. It means the record exists. Somewhere in Viant's system is a line for every impression, showing whether it ran on DirecTV or somewhere else.

So ADOTAT asked Viant a simple question: can a buyer on a "DirecTV" deal get that report?

And: what share of a DirecTV deal through Viant actually runs on DirecTV?

Viant hasn't said. DirecTV hasn't said.

The buyer paying for the name is the only party in the deal who doesn't know.