Haas group principal Ayao Komatsu stated Horner had “approached” the US-based group however added: “Nothing has gone any additional. It’s completed.”
Alpine managing director Steve Nielsen stated the French group’s government adviser and de facto boss Flavio Briatore was “previous pals” with Horner.
Nielsen added: “I do not know what they speak about. Every little thing I do know is there aren’t any plans for Christian to come back to Alpine however that does not imply it will not occur.”
Williams group principal James Vowles stated Horner had not approached them.
“We’re very pleased with the construction we’ve got and it is working,” Vowles stated. “I do not see any motive to alter from that.”
The boss of the Cadillac group that’s getting into F1 dominated out any reference to Horner in August. Chief government officer Dan Towriss stated: “There have been no talks with Christian Horner and there aren’t any plans to try this.”
Horner is free to return to F1 by the center of subsequent yr after finalising a severance package with Red Bull on 22 September.
The 51-year-old was fired as Crimson Bull group principal after the British Grand Prix in July.
A number of sources at Crimson Bull have advised BBC Sport the settlement package deal was value 60m euros (£52m).
