How exactly to watch BCS and BB?

So some slight spoilers for the shows. I've already seen everything the shows have to offer with the only thing I haven't seen is El Camino but that's partially because I'm not sure when exactly it takes place (after or before the final season of better call Saul)

Now better call Saul is a prequel show but the black and white sections of the show are taking place in the future/present of the overall timeline. There's also th final season where Saul admits he was working with Walter and kept him out of jail but I wanna show a friend of mine the series without having things be confusing. Because of the black and white sections and a few other details, you basically need the context of breaking bad to watch better call Saul despite everything being set up as a prequel where almost none of the events from the first show have happened yet

Should I just watch breaking bad and then better call Saul or should I just try and watch better call Saul and then breaking bad with my friend