Escape route and a intelligent mount with feats

[Diego Rossi]

Escape route:

PRD wrote:

Escape Route (Teamwork)

You have trained to watch your allies' backs, covering them as they make tactical withdraws.

Benefit: An ally who also has this feat provokes no attacks of opportunity for moving through squares adjacent to you or within your space.

Ravingdork wrote:

I recommend the Escape Route teamwork feat. Put it on both you and your mount, and neither of you will ever be bothered by movement-related AoO's during mounted combat for the rest of your career.
...
My summoner and his serpent-dragon eidolon mount use the combo to great effect. Drives my GM nuts.

To me it seem a clear violation of RAI but RAW RD interpretation of the rules is valid.

Someone has any insight if there is a rule that block this kind of trick?

[Ravingdork]

I made a thread like this once. If I recall, no one managed to break the combo.

[Ryu Kaijitsu]

It isn't really that much of a trick, there are a lot of classes/archetypes that grant some teamwork feats to all party members, if Escape Route would be chosen for that, all PC-s, NPC-s, mounts, companions, and familiars would get its benefits as well.