Gunther Steiner believes the "alpha-male" philosophy at Red Bull and Porsche respectively was a major reason why the proposed Formula 1 link-up was called off.
After sister Volkswagen brand Audi signalled their intentions to join F1 in 2026 for the new engine regulations, Porsche were widely expected to enter - and partner up with Red Bull.
However, despite the groundwork being laid, the deal was called off after a difference in "DNA" in the words of Red Bull boss Christian Horner with Porsche unhappy at the proposed structure of a 50-50 deal.
Red Bull will remain an power unit manufacturer in its own right through Red Bull Powertrains, but Haas boss Steiner believes the deal was always likely to collapse.
Viewed by others:
Alpha-males at Red Bull and Porsche
"My personal opinion is that two alpha-males collided here and that's tricky," Steiner told LAOLA1 .
"With a 50/50 split, one has to be in charge. There would have been an impasse, which would have caused problems. It is not yet certain that Porsche will not enter Formula 1 after all.
"But you have to come with a new idea."
There was no immediate reaction from Porsche to say it was still committed to entering Formula 1, with a date of October 15th the cut-off for new entries for the revised 2026 regulations.
F1 Podcast: Does F1's grid penalty system need revising?
With confusion reigning for several hours over Max Verstappen's starting position for the Italian Grand Prix, does F1's grid penalty system need revising, and should there be a rule preventing races from ending under the Safety Car?
RacingNews365.com F1 journalists Dieter Rencken and Michael Butterworth discuss the key issues from the Italian Grand Prix.