Conversation so far:
When did A.J.
Styles return to the independent circuit?
On March 14, Styles returned to International Wrestling Cartel (IWC.
Did he leave it again in 2005?
On April 1, 2005, Styles returned to PWG.
What is PWG?
CANNOTANSWER.
What was a major event for him during this return?
On July 20, at CZW: Deja Vu II, Styles successfully defended the NWA World Heavyweight Championship against Rave.
Did he have a major rivalry with Rave during this time?
Styles teamed with Jason Cross to face Jay Briscoe and Jimmy Rave, in a losing effort.
Who else did he partner with during this period?
CANNOTANSWER.
Did he retire in 2005?
in.
Did he lose any matches in this period?
On August 23, Styles unsuccessfully challenged new Super Indy Champion Colt Cabana after the match ended at a twenty-minute time limit draw, meaning Cabana retained the title.

Question: Which title did Cabana retain?
Self-contained rewrite: Which title did Colt Cabana retain on August 23?