Tbh I don’t really understand either how Gillian can say that they can’t know one another well, they’ve been co-workers for *so* many years, and that was a lot of hours spend together in seasons 1-7 especially. It seemed like David and Gillian did talk about how close they were more in the run-up to season 10 and were getting very nostalgic, so I agree that Gillian does seem a bit back and forth, idk I get the vibe that Gillian is just really over the X-Files these days