Marcus,
Both channels should be returning similar results, maybe not exact. As for agent assist, for automated search, we have a relevance threshold that will only return articles above 50% relevance, this is there to reduce the amount of information being surfaced during a conversation. The agent can still perform a manual search and depending on the knowledgebase, the search etc, may get articles of a lower relevance.
I would expect highly relevant articles to be surfaced on both channels, maybe just the lower relevant articles are different. You can also test the knowledge article and see the relevance by following the knowledge article https://help.mypurecloud.com/articles/test-queries-in-a-knowledge-base-v2-article/
I hope that helps
Mike
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Mike Ray
Product Manager - Agent Assist
Mike.Ray@genesys.com------------------------------