Access to last command in Zsh (not previous command line)

Question

Is there a way to retrieve the text of the last command in Zsh? I mean the last executed command, not the last command line.

What was tried

Trying to do it, I discovered a subtle difference between Zsh and Bash handling of history. This difference is exposed in the following sample, which is the base of what I was doing in Bash, and which does not work in Zsh.

$ zsh
$ echo "This is command #1"
> This is command #1
$ echo "This is command #2"; echo $(history | tail -n1)
> This is command #2
> 3807 echo "This is command #1"

$ bash
$ echo "This is command #1"
> This is command #1
$ echo "This is command #2"; echo $(history | tail -n1)
> This is command #2
> 4970 echo "This is command #2"; echo $(history | tail -n1)

Same tests, whose result differs in the last line. Bash appends the command line to the history, before execution (I don't know if it's by specification), while Zsh seems to append the command line to the history, after execution (the same, I don't know if it's by specification), thus history | tail -n1 does not give the same.

What I want, is to be able to retrieve echo "This is command #2", that is, the text of the previous command even when it's on the same command line as other commands (when there are multiple command separated with ;).

With bash, I could use history | tail -n1 | sed ..., but this does not work any more with Zsh, due the difference in history handling.

What needs to be achieved

Any idea on how to get the last command from a multi‑command command line in Zsh?

I need it for when a command needs to know what was the previous command, whatever that command was on the same line or the previous line. Another way to say it, could be: I need to access the last item of a single command oriented history, not of a command(s) line oriented history.