When Gleason is back home after filming Navy Blues and arguing with his wife about not working in 2 months he pours a drink and in the next shot the glass is empty.
When Gleason holds his newborn, the baby's hair changes colour in the next shot.
Gleason is shown receiving a package of photos from his father who abandoned him as a child. In real life, Gleason never heard from his father again after he left the family.
Gleason is shown being fired from Navy Blues (1941) in 1949 or 1950. In real life, the film premiered in 1941 and he was not fired. Also, Cavalcade of Stars (1949) was not his TV debut. He starred in the short-lived series The Life of Riley (1948).
The second scene shows preparations for the "Honeymooners" broadcast at what is labeled "CBS Studios, New York City 1955." For the half hour "Honeymooners" episodes, Gleason returned to the Dumont Network, his original network, to produce the shows (while CBS carried the shows) in order to use their Electronicam system with cameras that broadcast a live TV image and simultaneously filmed the program. "Stage Show," which Gleason produced for the other half of the hour, did not originate from the same theater but was aired from what is now The Ed Sullivan Theater (Studio 50). There was no "CBS Studios" at the time. Shows with a studio audience originated from various theaters in the mid-town theater district and other programs originated from an upper level space over the waiting room at Grand Central Terminal.
The same audience is used every time the audience is shown.
The opening scene is eastablished as being 1924. When Jackie and his father return from the theater, Herb Gleason offers Jackie a nickel with Monticello on the reverse side - a Jefferson nickel. This design wasn't minted until 1938.