"Andretti had signed an engine supply contract with Renault but that expired in March 2023"

To get the ball rolling, Andretti had already signed a preliminary contract with Renault years ago. But that expired in March 2023. And at the moment, the French are showing no great desire to resume negotiations on a continuation. Renault, alias Alpine, does not want to get caught in the crossfire of a power struggle between the FIA and FOM.