As both PowerApps(canvas) and Virtual Agent both are part of the Power Platform, it totally makes sense to integrate both of them so we can use Virtual Agent inside the PowerApps. There is some workarounds of using a custom connector or component, but it's not easy for a Power User to go through that route.
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See more here: Add images and videos to topics - Power Platform Release Plan | Microsoft Docs
Feature details
Add online-hosted images and videos to your chatbot's topics using a Power Automate template. The template points to a live URL where you've hosted your content and loads it directly in the bot's chat window. By including an image or video in a bot's response instead of using a long textual description, you can handle complex scenarios while keeping messages concise.