Does moving a unit to an empty battlefield trigger a showdown with a window for the opponent to gain focus and take actions?

Ruling: Yes, moving to an open battlefield causes a showdown to open, which gives the opponent a window to gain focus and take actions.

Nuances:

• Players may shortcut through the showdown if the opponent has all runes exhausted or verbally agrees to pass focus
• Shortcuts like immediately scoring the point are acceptable if the opponent doesn't interrupt or ask them not to do it