Variants: Confused Variant-key example

[Tanych]

In section https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-variants-06#section-3

1. For the following example, could you please elaborate why Variant-Key header can be considered completely absent?

   Variants: Accept-Encoding=(gzip br), Accept-Language=(en fr)
   Variant-Key: (gzip fr), (identity fr), (br fr oops)

As it says

When more than one Variant-Key value is in a response, the first one present MUST correspond to the request that caused that response to be generated

However, the first key (gzip fr) can cause the response to generate. do I miss read anything? thanks.

2. Can Variants has '*' like: Variants: accept-encoding=* and Variants: *?