Conversation so far:
what happened between billy and chuck?
Billy and Chuck quietly disbanded.
why did they disband?
They lost the match to the team of Ron Simmons and Reverend D-Von.
when did they get together as a team?
Gunn was defeated by Chuck Palumbo, who recently left The Alliance to join the WWF.
After the match, Gunn suggested that they form a tag team.
did chuck agree?
Palumbo agreed, and Billy and Chuck quickly rose to the top of the tag team division.
were they liked?
Initially they were a generic face tandem, but soon turned heel when they were given a gimmick where they grew increasingly affectionate toward each other.
why did they turn heel?
showing evidence of a storyline homosexual relationship.
were they in a relationship?
However, just before they tied the knot, they revealed that the entire ordeal was a publicity stunt and disavowed their on-screen homosexuality, admitting that they were just friends.
were they going to get married?
Chuck proposed to Billy, asking him to be his "partner for life" and gave him a wedding ring.
where did chuck propose to him?
On the September 5 edition of Smackdown!, after Gunn lost a match to Rey Mysterio, Chuck proposed to Billy.

Question: and in what edition were they getting married?
Self-contained rewrite: On what edition of Smackdown! were Billy and Chuck getting married?