I'm not sure that I can think of examples yet where the alternative meat market, such as Beyond Meat, has seemingly engaged in tacit collusion, especially as they are working to drive down cost to have the one-on-one trade-off with traditional meat products. There is some price warring , where Impossible Foods cut their grocery store prices by 20%, going on in the industry too since the field is becoming overcrowded while the "growth in the plant-based meat category decelerated meaningfully in the U.S. retail sector from 45% in 2020 to a negative 0.4% in 2021" through the pandemic; although you may argue that this may show that Impossible is trying to take a top-dog strategy approach. The only arena that I can think there may have other types of tacit collusion is with declaring what major fast-food providers they are partnering with since traditional meat suppliers do not seem to really focus on publishing that type of information (e.g., do I know (or care) if Tyson is ...
An analysis of Beyond Meat for Spring 2022 at the University of Memphis