Copy combined password in "User and Password"

I have a password consisting of 4 fixed characters and a 6-character OTP.

I saved both in the "User and Password" entry.

How can I copy the combined password? ( XXXXYYYYYY )

I can only copy them separately with this entry.

Alternatively, I can create an "RDP" entry and define the combination in it.

I can then copy the combination from this entry.

Is it possible to add this setting to the "User and Password" section?

So that a separate RDP entry isn't needed just to combine the password.