Vim-airline: can I have only one status line stay on bottom?

[yukihiratype2]

environment

• vim: 8
• vim-airline: 7df411d
• OS: OS/X
• Have you reproduced with a minimal vimrc: nope
  if you are using terminal:
• terminal: iterm2

actual behavior

Sorry I'm new to air-line but I just have little problem with window split.
When I only use one window in vim, air-line just work fine:

When I split vim vertical,I got my status line been divided to two parts.And both window has only half width,when this happens ,air-line can't display well cause width isn't enough :

expected behavior

I mean, could air-line use whole status line when I split window, not just half-width?

[chrisbra]

not possible. statusline is per window. You cannot have one line accross all windows.