The double-chambered bottle is so that one section can hold the fake pills he wants to give to hector, the other section is to keep the real pills in for when he wants to switch them back

When Jimmy went to the restroom in the courthouse, I was half expecting him to just jump out a window.

It wasn't ever explicitly mentioned in the show, but I remember reading about it in a synopsis for BCS before it premiered.

BCS is supposed to take place in 2002, about 6 years before BB started