The more it's going, the less likely it become. As stated, last chapter, Luffy was the one who was given the burden of Oden's scabbards to save Wano. In this chapter, Oden is among the shadows Kaido sees in Luffy after Kaido thinking Luffy shouldn't match him. All heads towards Luffy being the only one to be able to match him in a 1 on 1 since Oden, who also could have bested Kaido on his own if not for the hostage thing.
Zoro on the other hand at best would participate in weakening Kaido by either opening the old scar or creating a new one, which would show Zoro's potential comparatively to Oden, but not actually placing him in the same caliber of people who'd match him in a 1 on 1, where Luffy would be portrayed to be