Why?

Flights and stopovers
- Select up to 16 flight segments on your round-the-world itinerary. Travel between two airports by surface transportation will count as one flight segment.
- Each tier includes the following stopover allowances:
Tier 1 – Minimum two. Maximum five (including a maximum of two within a region).
Tiers 2, 3 and 4 – Minimum two. Maximum four within a region.
All tiers – A maximum of two stopovers are permitted in the region of origin.

I can have more than 4 flights/segments is the South America region.