Are these the same release group

So there exists on MusicBrainz a release group for https://musicbrainz.org/release-group/291a804d-432f-33ea-adab-49db9244f28e

On Record Store Day 2019; one of the releases was Janis Joplin - Woodstock: Sunday August 17, 1969 - this is not currently in MusicBrainz but can be seen on Discogs https://www.discogs.com/Janis-Joplin-Woodstock-Sunday-August-17-1969/release/13471089

Should I enter the RSD2019 LP as a release within that existing release group (the track listing / recordings are the same); or as the title is different should I enter it as a new release group.

Thanks for the help.

I would add it in the existing release group. (Not changing the release group name.)

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