Recordings of public GQL meetings are hosted on YouTube.
The following presentations are from an LDBC TUC meeting in August, 2021:
"Property Graph Standards, Process & Timing", Keith Hare, August, 2021
"Towards GQL 1", Stefan Plantikow, August, 2021
The following talks from GraphConnect 2018 are available on the Neo4J site. The videos of these talks require a Neo4j login but the slides can be viewed without logging in.
"Neo4j Morpheus: Interweaving Table and Graph Data in Spark" - Alastair Green & Stefan Plantikow , September, 2018
"Integrating Property Graphs into the SQL Standard" - Keith Hare, September 2018