Why is an intention of 2 through طَلِّقِي valid in the historical enslaved-wife example, but not in the free-wife example discussed?

Amr: One Performance and Repetition

• Because the command always means two repetitions
• Because intention always removes every wording limit
• Because 2 is the full number in that historical case, while the free-wife example has a full number of 3
• Because the first exercise leaves unlimited further authority