Someone on Mastodon @'d my Lemmy account. how is this possible? I though Lemmy and Mastodon are seperate from each other?

pic unrelated

  • ChaoticNeutralCzech@feddit.orgEnglish
    3·
    3 days ago
    The MD of your comment as seen on Lemmy 
    [@ChaoticNeutralCzech](https://feddit.org/u/ChaoticNeutralCzech) [@asklemmy](https://lemmy.world/c/asklemmy) [@Zak@lemmy.world](https://lemmy.world/u/Zak) 

That's true from Lemmy, but not from Mastodon. Mastodon won't detect !asklemmy@lemmy.world as a mention. 

I'm curious as to how Lemmy handles collisions from external sources. [@cat](https://lemmy.world/u/cat) exists as both a user and a community. Since this is a comment, Lemmy shouldn't post it to the community, but will Lemmy users see a link to the user or the community?

    The @cat mention became a hyperlink to the user page.