Leo planned to begin with Zhane, given his closer relationship with the Lennons. By pushing Zhane to be more sincere in the collaboration proposal, Leo aimed to ensure that the offer would be generous. This way, he would not only help Hera gain an advantage but also increase her own income from the deal.
If the collaboration between the Everett and the Avery is established, it would bring mutual benefits and significantly boost their profits. The combined expertise of the world's top two medical geniuses could potentially lead to groundbreaking cures. This outcome would surely please Hera, and Leo could subtly take credit for being the catalyst behind the successful partnership.