Why is Zoom's Android app updating from Samsung Galaxy Store?

[David-P]

I installed the Zoom Android app from Google Play Store.  However, my phone now wants to update the app via the Samsung Galaxy Store.  Is this switching of stores correct and expected behavior?  This seems suspicious, like inviting someone into my home, then they pull in another, uninvited stranger.

I tried uninstalling Zoom, then re-installed from Google, but it is still wanting to update from Samsung.

Google version is 5.14.10.14212

Samsung version is 5.15.0.14500