Just because Kim and Chuck don't appear in BrBa doesn't mean they're out of Saul's life

I keep reading this all over the sub that people are dreading the moment Kim will leave Jimmy, or that Chuck will die. But let me remind you that in BrBa we know next to nothing about Saul's private life. In pretty much every scene with Saul we see him in the role of Heisenberg's lawyer. He's either in his office working or on the road in his Cadillac. We aren't shown what he does outside of work. Hell, we don't even know what his living situation looks like. Kim and Chuck aren't mentioned in BrBa for the simple reason that they weren't made up characters at that point.
So instead of dreading the Jimmy and Kim break up, try to look at the other side of things. Chances are Saul is still in good standing with Kim (and that Chuck is still around, though fuck him).