AOS and Warranty

[Travelmind]

Quick question... I was just told my my auto repair that the crancase ventilation value and breather hose needed to be replaced after i towed 02 Boxster in. After looking at the forum this seems to be the AOS issue. They called in my warranty and was told by Intercontiental warranty that these items are not covered. my question is does this sound reasonable?

thanks for help....