Conversation so far:
What did Costello do while he was away from the Kangaroos?
Heffernan returned to Australia and began working for World Championship Wrestling (the Australian version, not the North American wrestling federation) under booker Jim Barnett as a singles wrestler.
Did they perform well during their time in World Championship Wrestling?
The Globetrotters defeated the Mysterious Medics in the finals of the Georgia NWA World Tag Team Championship but only held the titles for a week.
Who were The Globetrotters?
Costello began wrestling for Georgia Championship Wrestling, where he teamed up with Louis Tillet to form a tag team known as "The Globetrotters".
How long did Costello wrestle under the name "The Globetrotters"?
on 4 February 1966.
After this, the Globetrotters broke up due to differences in their approach to tag teaming.

Question: Where did Costello move on to after leaving the Globetrotters?
Self-contained rewrite: Where did Al Costello move on to after leaving the wrestlig team The Globetrotters?