Repeating last lines before automatic frame break on new beamer page

Question

Is it possible to repeat the last lines before the automatic frame break on the new beamer page?

Essentially, I want to display

\begin{frame}
A
B
...
Z
\end{frame}

as

\begin{frame}
A
...
P
\end{frame}

\begin{frame}
K
...
Z
\end{frame}

where last line P and first line K are chosen to use the available space (so there is overlap).

Answer 1

The beamer class documentation recommends:

Do not use the option allowframebreaks except for long bibliographies.

[...]

Using the allowframebreaks option invites the creation of horrible, endless presentations that resemble more a “paper projected on the wall” than a presentation.

To answer the question concretely: If I were you, I would divide the one long slide into individual frames just like in your second code snippet.