Hi Jeff,

I found this to be useful: https://gnso.icann.org/sites/default/files/file/field-file-attach/gnso-liaison-wg-21feb18-en.pdf

In answer to your questions, I read:

• A liaison must be a member of the GNSO Council.
• GNSO Council Liaison to the Country Code Names Supporting Organisation (ccNSO)
  The GNSO Council also appoints a liaison to the ccNSO. The role of the liaison is to follow the deliberations of the ccNSO and identify when there are issues or topics being discussed that are of mutual interest. Furthermore, the liaison is expected to be available to answer any questions or relay any queries the ccNSO may have for the GNSO Council. As such, the GNSO liaison to the ccNSO is expected to:
• Participate in the meetings and activities of the ccNSO;
• Be sufficiently informed of ongoing GNSO efforts to communicate and advocate the positions of the GNSO to the ccNSO on topics of mutual interest;
• Report to the GNSO on current and upcoming activities of the ccNSO that may be of relevance to the ccNSO and broader ccTLD community;
• Actively prepare for and participate in bilateral meetings between the GNSO and ccNSO Councils.
• Report to the GNSO Council not less than once a month on the activities of the ccNSO. This can be done in writing to the Council mailing list and could include sharing meeting agenda’s and/or meeting outcomes. The liaison should seek specific direction from the GNSO Council on issues of mutual interest where GNSO Council input is required.

I don’t see anything referring to the SSC here, but at the same time this is the fruit of a few minutes of search online. This is by no means exhaustive.

Kindly,