Sugar Glider and Flying Squirrel?

I would like to know if these species are compatible, given that they have different diets. I know that flying squirrels are not as socially dependent as sugar gliders, and don't have to have a partner in order to thrive, and that one is a marsupial and the other is a squirrel. Nevertheless, do these differences serve as an impediment to keeping them together in captivity? Has anyone tried it? Thanks.