The IETF listed as one of the few organizations that have a "Relationship" with IEEE 802.1 here: https://ieee-sa.imeetcentral.com/802liaisondb/FrontPage
Further information about liaison to IEEE 802.1 can be found here: https://1.ieee802.org/liaisons/
The corredponding list of liaison statements sent from and received by IEEE 802.1 is here: https://1.ieee802.org/liaisons/liaisontable/