I have a YouTube channel for my personal account, and one for my business account. I have associated a Google+ page to both channels. In the business account, I have clicked "Managers" (in the drop down in the top right), and added my personal gmail account as a Manager. This has all worked fine.
Now, though, I am trying to use the YouTube API to list all of the channels that my personal account has rights to manage. I'm trying to use the Google Developer's page here https://developers.google.com/youtube/v3/docs/channels/list#try-it but it is only returning the one channel that is directly associated with my personal account. I'd expect it to return both the personal channel and the business channel.
Is there a way, an api call, or a setting that will allow me to make a single api call for an oauth user and see all of the YouTube channels / Google+ Pages that the user has permissions to manage?