Customer merge algorithm - merge based on card?

Ok, I think I got confused reading szisman’s response to another question and thought there was a possibility of auto-merge of profiles - quote “It is possible we would merge customers with Customer Cards that have matching phones or emails” (from: Trying to understand the Customers API - #2 by szisman). But from your answer it’s completely clear to me now that there is absolutely no auto-merge done by Square so there’s no background process involved. Thanks for clarifying.