My apologies as I was unable to find another copy of the recording to that session (the instructor no longer works here). Here is the recording and .dbc file to the same session from a previous year as the contents is mostly the same:

• Recording: attached
• DBC file: https://files.training.databricks.com/events/summit-2020-06/spark-programming/DB-105-5.2.1-IL/azure/...