Go to “Settings”-->”Feed” and scroll to “Advanced Feed Settings”. At the bottom, you will find “Feed of the Latest Episode”. This is a special feed which will only show your most recent episode, as needed for Alexa Flash Briefings. You can submit this feed for your Alexa Flash Briefing, while using your full feed for all other sources where you want all episodes to show.

Read more about what an Alexa Flash Briefing is and how to set one up for your podcast.