Bash: is it possible to do this kind of manipulation in one command?

Question

linux

Good afternoon, tell me if it is possible to somehow optimize this with a single command?
Show the contents of a file, copy to another, and show the contents of both files.
$ cat myfile | tee mycopy && cat myfile mycopy
The question has no practical meaning, only theoretical.
Thanks in advance.

Answer 1

Yes, it is possible, just write this command yourself)

Answer 2

cat a >> b && cat ab

Answer 3

cat /etc/passwd | tee x - -