draft-ietf-iasa-bcp-01 section 4 also says
The members of the IAOC choose their own chair each year using a
consensus mechanism of their choosing. Any appointed voting member
of the IAOC may serve as the IAOC Chair; the IETF Administrative
Director, the IETF Chair, the IAB Chair, the ISOC President/CEO, and
non-voting liaisons are not eligible to serve as IAOC Chair.
most of the 2nd sentence is redundant and not needed - once you
say that only appointed members can be chair you have it all defined
Scott
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