Conversation so far:
What happened with Winchell-Mahoney Time?
Winchell's best-known ventriloquist dummies were Jerry Mahoney and Knucklehead Smiff.
Did he have any other dummies?
CANNOTANSWER.
What else happened?
Winchell's first show as a ventriloquist was on radio with Jerry Mahoney in 1943.
What happened after that show?
The program was short-lived, however, as he was overshadowed by Edgar Bergen.
Did he have any other programs?
In 1948, Winchell and Joseph Dunninger were featured on Floor Show on NBC.
Was that show successful?
CANNOTANSWER.

Question: What happened after that show in 1948?
Self-contained rewrite: What happened after Floor Show in 1948?