Horizon Walker background proficiencies

I'm unclear on which proficiencies are correct for the Horizon Walker background.

• The background reports: Acrobatics and Survival
• The Horizon Walker faction says membership prefers Arcana or Survival.

Logic:

• Acrobatics makes sense considering the Ability Scores for the background include Dexterity and not Intelligence.
• Arcana makes sense since its a understanding of Planar knowledge.

My first guess is that it should be Arcana and Survival (and perhaps Acrobatics was a accident). Your thoughts.

Acrobatics is correct, per the physical book.

None of the faction backgrounds' skills exactly match the list of skills the faction description says they might be looking for in a recruit; that's intentional, because it's expected that some characters who don't have the faction background will join the faction later in their career.