SCC Retention Policy overlap with EAC Retention Policies

Question

I'm working to gain some confidence in an SCC retention policy for email that will be configured to retain email for discovery purposes for a period X years followed by deletion.

To test that SCC retention policies delete content so that it's not discoverable I've created a "micro" retention policy that deletes email older than 10 days and applied it to 1 mailbox. That test mailbox is also excluded from all other SCC retention policies that have retention settings set for several years retention followed by deletion.

The test mailbox also has an EAC retention policy that includes a retention tag for the inbox to retain messages for 6 months before deletion with recovery allowed.

In the test mailbox, in folders other than inbox (sent items for example), messages show the "Micro Email Retention" label applied to message items, and there's nothing older than the 10 days in there either.

The inbox messages for the test mailbox show a label for the EAC retention label of 6 months:

My understanding of EAC retention policies is that they don't retain data for eDiscovery, rather they cause the MRM system to delete / archive messages when the policy calls for it. However, if something else were to delete that message, the user for example, there's nothing in an EAC retention policy to stop that. So, it's really more of a don't delete this stuff until X time has passed, with no regard for something else deleting content. My thought was that an SCC retention policy would delete messages where an EAC retention label with a longer retention overlapped the SCC retention policy. That seems to not be the case even though the two have different notions of what "retention" means.

Is that correct, that an EAC retention label to "retain" for 6 months will take precedence over an SCC retention policy for say 10 days?