How is "Excessive Action" (Amal Kathir) defined in Hanafi jurisprudence?

Invalidations of Prayer Part 2: Excessive Actions and Excretions

• Any physical movement that takes more than 10 minutes.
• Any action that leads an observer from a distance to have no doubt that the performer is not in prayer.
• Moving both feet at the same time.
• Reciting a Surah too quickly.