We don’t know yet if they have scenes together, and even if they don’t, it doesn’t mean they didn’t meet. Didn’t he tweet about being on set with her or am I confusing him with another member of the cast? Anyway, he tweeted last night about her being amazing, so I guess he knows her work.
I think Orlando Jones knows more about Gillian in private than all of us reunited know and will ever know, so just for that, I think he deserves our respect.
As about David, do we even know with whom he hangs out? I mean, there was a picture of him last Halloween at a party with Amy Shumer. Did you even know they were friends? Their lack of public interaction isn’t an argument to prove their lack of personal interaction. This goes for David and Orlando Jones and for David and Gillian, by the way.