I could see them both wanting Keesha over Renny as an F3Renny wins next HOH she'd likely put up Memphis and Dan.
Keesha wins next HOH she'd likely put up Jerry and one of them.
Renny wins F3 HOH neither Memphis or Dan would be sure she'd pick them.
Keesha wins F3 HOH I think either of them might believe Keesha would pick them.
I don't think either of them want to be sitting next to Renny in the final two as Renny may be too well liked. Being next to Keesha at least you can pull the "remember how much you hate her" during the final questioning thing.