I think what's weirder than not seeing Ridley and Driver together or talk about each other is the fact that we never saw much of Driver for Star Wars specific stuff in general as much as the other cast members. We still don't.
Adam has done a lot of SW press (junkets, press conferences, premieres, talk shows, etc.), I think he just stands out less since he’s naturally more reserved and quietly spoken. Daisy, John and Oscar are all very sociable and bubbly, so they seem much more prominent by comparison.