Conversation so far:
What were Billy Gunn's The New Age Outlaws?
The New Age Outlaws were a professional wrestling tag team in the World Wrestling Federation made up of Road Dogg Jesse James and Badd Ass Billy Gunn.
What was the D generation X?
D-Generation X was a professional wrestling stable, and later a tag team, that appeared in the World Wrestling Federation.
How strong were Jesse and Billy of the New Age Outlaws?
Jesse and Billy of the New Age Outlaws are six-time tag team champions in WWE, having held the WWF World Tag Team Championship five times.
Did The New Age Outlaws ever lose?
The New Age Outlaws lost the tag title to Kane and Mankind in the summer of 1998.
Any other losses for The New Age Outlaws after they lost the tag title to Kane and Mankind?
In 1998 McMahon's Corporation tried to tempt the Outlaws away from DX and failed, leading to the Outlaws losing the title to Corporation members Ken Shamrock and Big Boss Man.
Did the New Age Outlaws ever win any tag team championships?
James and Gunn defeated the Legion of Doom for the Tag Team Championship in November 1997.
Who did the New Age Outlaws lose the title to?
The New Age Outlaws lost the tag title to Kane and Mankind in the summer of 1998
Did the New Age Outlaws ever get the title again after they lost the tag title to Kane and Mankind in the summer of 1998?
The New Age Outlaws regained the titles from that same team at SummerSlam in a handicap match after Kane no-showed.

Question: Who did they lose that to then?
Self-contained rewrite: Who did the New Age Outlaws lose the tag title to after they regained their titles at SummerSlam?