Pin count inconsistency?

Hi,

When I download the Kicad symbol and footprint for 10151114001TLF I get a symbol that has 280 pins, not the expected 314 pins that I need for a Smarc carrier board connector.
This page
https://www.snapeda.com/parts/10151114-001TLF/Burndy/view-part/?ref=search&t=10151114-001TLF&ab_test_case=b
says that the pin count is 314, but as mentionedthe Kicad symbol shows pins P1...P280, not 314 pins.

Is there something wrong with the symbol or do I misunderstand something?